Quick answer

Overrun Countries stamps value depends on condition and format. On October 18, 2026, Mystic asked USD 7.25 for the thirteen-stamp mint set, USD 0.55 for a mint Poland single and USD 0.50 for a mint Korea single. These are retail asks, not realized sales or an appraisal of your stamps.[1][2][3]

Identify the American issue before pricing the flag

The Overrun Countries stamps are United States postage stamps, even when the central picture is the flag of Poland, France or Korea. Look for UNITED STATES POSTAGE across the top, a five-cent denomination, a violet ornamental frame and a country name beneath the flag. The United States honored occupied countries through this series. The pictured flag is the subject, not the issuing postal authority.[1][2][6]

That distinction changes where you search in a catalog. A French tricolor inside this American frame belongs with United States commemoratives, not with stamps issued by France. A flag outside this frame may belong to a different American or foreign series. Do not apply the prices below to every stamp with a flag, or to later United States flag definitives. Match the complete design and inscription before considering condition or price.

This guide covers the ordinary five-cent Scott 909 through 921 issues of 1943 and 1944. It does not quote values for proofs, essays, certified errors or later flag sets. Use a catalog-number identification method if the stamp has been mounted under an uncertain handwritten label. Keep that label as a clue rather than treating it as authentication.

Check the thirteen subjects, including Korea in 1944

A complete basic set has thirteen different flag subjects. Twelve were issued in 1943; the Korea stamp followed on November 2, 1944. An album page labeled only 1943 can therefore look complete while missing the final issue. Check the subjects, rather than counting thirteen pieces without reading their names.[1][3]

The checklist below pairs the standard Scott numbers with the subjects in issue order. It is an identification checklist, not a separate valuation for every flag. For example, an extra Poland does not replace a missing Korea, and two copies with different cancellations still represent the same basic subject. Record duplicates in another column so that they do not inflate your set count.[5]

The real Korea scan helps with the shared frame and the final subject. Its original file is only 373 by 241 pixels. It is sufficient for recognizing the design, but not for comparing microscopic printing details, proving original gum or assigning a numerical grade. The colorful collecting arrangements elsewhere in this article are generated illustrations, not examples of certified stamps.[6]

Basic subject checklist, Scott 909 through 921. Korea completes the set in 1944.[1][3][5]
ScottFlag subjectIssue year
909Poland1943
910Czechoslovakia1943
911Norway1943
912Luxembourg1943
913Netherlands1943
914Belgium1943
915France1943
916Greece1943
917Yugoslavia1943
918Albania1943
919Austria1943
920Denmark1943
921Korea1944
Actual US five-cent Korea stamp, UNITED STATES POSTAGE above its flag and KOREA inscription
Actual 1944 Korea issue, Scott 921. Public-domain scan from Wikimedia Commons, original 373 × 241 pixels, enlarged with padding. It is not evidence of gum or grade.[6]

What the printing method does and does not tell you

American Bank Note Company printed this series. Mystic describes the Poland issue with the broad label Flat-Plate, while Hal Klein's specialist presentation explains combined engraved and rotary printing, including an engraved outer frame and a separate flag-printing process. These descriptions operate at different levels. Neither justifies calling every blurred flag a rare photogravure error.[2][4]

For a beginner's description, write the issuer, five-cent value, country subject and visible format. Leave a more exact production attribution unresolved until you have a specialist reference that matches the feature being examined. A printing term borrowed from another stamp series is not evidence about this one. In particular, a scanner result should not become the sole basis for an expensive variety claim.

Klein illustrates double impressions separately from ghost or jitter impressions. That distinction matters because a second-looking edge can have different causes. Compare the entire country inscription, not just one fuzzy letter in an enlarged phone image. If the photograph cannot resolve the feature, improve the photograph before assigning a catalog suffix or a premium.[4]

Check a likely match after reading the inscriptions

Photograph the entire front on a neutral background, including every perforated edge. Take a separate back photograph when the stamp is already loose. For a block or sheet, first photograph the complete item with its margins, then add a close-up of one stamp. Do not remove a stamp from a connected multiple merely to fit a phone camera frame.

Use the checker as a way to organize a likely match for this five-cent series. Confirm that the output says United States and the relevant flag subject. A country guess based only on the flag is incomplete. If a result identifies a later American flag definitive, compare the printed frame and denomination again before saving it under Scott 909 through 921.

The tool provides identification and estimated collector context, not authentication, certification, grading or a formal appraisal. Its result cannot establish never-hinged gum, prove a double impression or guarantee a selling price. Keep the original photos with your notes so that a dealer or specialist can assess what the automated match did not resolve.

Drop a stamp photo here

Show the full stamp, every perforation, and as much front detail as possible in even light.

Choose a photo

Keep the thirteen flag subjects together

Install Stamp Value Identifier & Scan free on iOS or Android. Scan individual flag stamps and save the results together while you check missing subjects, duplicates and formats. Identification and value context are starting points, not certification or a formal appraisal.

Download on theApp StoreGET IT ONGoogle Play

Current dealer asks, with the unit kept explicit

These offers were observed on October 18, 2026. The currency is USD, explicitly stated in Mystic's product data. The figures are dealer asking prices before any applicable delivery charges or taxes, not auction realizations or promises of what a dealer would pay you. The Poland page shows different prices for different selected formats.[1][2][3]

The table retains the stock identifiers because the same catalog number can represent a used single, mint single, block or sheet. Mystic's selected mint wording does not specify hinge status or a numerical grade. Do not silently upgrade it to mint never hinged. The block and sheet variants are offered as whole items; the retrieved option labels do not state their stamp counts.[2]

Availability evidence is also limited. The pages expose an InStock product offer, and the Poland options display a shipping estimate of one to three business days. That is a live retail listing, not an independent count of remaining stock. Prices and availability can change after this observation. Consult the exact source option before ordering.[1][2][3]

Mystic dealer asking prices observed October 18, 2026, in USD. Whole offered unit, excluding delivery and tax; not realized sales.[1][2][3]
Catalog and unitStated conditionStock IDAsk, USD
909, one singleMint, hinge status and grade unspecified3457280.55
909, one singleUsed, grade unspecified3457310.40
921, one singleMint, hinge status and grade unspecified3458380.50
909-921, set of 13Mint, hinge status and grade unspecified3457367.25
909, one offered block, stamp count unstatedMint plate block, hinge status and grade unspecified34572910.00
909, one offered sheet, stamp count unstatedMint sheet, hinge status and grade unspecified34573030.00

Read the comparisons without inventing a market average

The Poland used-single ask of USD 0.40 and mint-single ask of USD 0.55 describe two retail options at one dealer. The complete mint set at USD 7.25 covers thirteen subjects, not thirteen copies of Poland. The Korea mint single at USD 0.50 shows that the final 1944 date does not automatically mean an expensive rarity.[1][2][3]

Do not take the Poland mint-sheet ask of USD 30.00 as a price for one loose Poland stamp. Equally, a block offer cannot establish a per-stamp premium until you know the quantity, margins, gum and condition of that block. The table deliberately leaves unstated stamp counts unstated instead of supplying an assumed number.[2]

A useful comparison is a second current offer for the same subject, physical unit and stated condition. Hobbizine's broader guide supplies undated indicative values drawn from mixed sources. It is useful for orientation, but its numbers are not a new sale or a fresh stock offer. Miller's specialist listings separate ordinary sets, name blocks and graded material. Those categories also should not be pooled into one average.[5][7]

Condition belongs in the description, not in a guess

For each loose flag stamp, note whether it is used or unused, whether the design sits evenly between the perforations, and whether there are tears, short teeth, creases or stains. Inspect the back without touching the gum. If the gum is hidden by an old hinge or mount, write that limitation down instead of describing an unseen back as perfect.

An unused front does not establish never-hinged condition. A seller's explicit NH description is different from the broad word mint. Our stamp condition guide explains the vocabulary. Apply it consistently across the thirteen subjects, rather than giving the most colorful flag an optimistic description and ignoring damage on the others.

For a proposed graded premium, identify the actual certificate, stamp and grade being offered. Miller lists graded examples alongside ordinary material, which is evidence of separate retail categories, not a reason to treat an ungraded album copy as equivalent. Certification costs and a possible premium require their own judgment. Nothing in this ordinary-price table recommends sending every flag stamp for grading.[7]

Keep singles, name blocks and sheets intact

A basic set means one of each of the thirteen subjects. A connected block is a different physical unit, and attached margins can carry collecting information. A complete sheet is different again. Photograph any country-name inscriptions or other margin markings before putting the item into storage. Do not trim margins because an album space is too small.

Klein's presentation treats margin markings and printing varieties as specialist material. Miller specifically offers sets of name blocks of four. That terminology is a warning to read a dealer's complete description: the unit includes a particular format, not simply a handful of interchangeable loose stamps. It does not establish the quantity in Mystic's separately labeled block option.[4][7]

For a sheet collection, make an inventory by subject and whole item. Record broken perforation rows, folds and missing margin pieces. If you already have loose stamps, keep them separate from complete multiples in the valuation worksheet. The diagram below is an illustration of different quantities, not a verified sheet layout for this issue.

Generated blank-paper illustration comparing a single, connected block and larger pane
Generated editorial illustration of different physical units. Blank diagrams are not specimens and do not verify the actual sheet layout or count of a dealer offer.

A doubled-looking name needs better evidence

Do not price a blurred inscription as a listed double impression on the strength of one enlarged picture. Klein distinguishes true double impressions from ghost or jitter printing in this series. A shifted flag color, weak letter or uneven impression needs an explanation before it needs a price. Preserve a full-frame image alongside the detail view.[4]

If you suspect a variety, write the subject and the exact feature in plain terms. For example, record that a second outline appears beside part of the country name, without immediately adding a catalog suffix. Compare ordinary copies of the same subject under similar lighting. Digital sharpening can make a faint edge look more definite than the original.

Use the errors and varieties checklist to decide which evidence to collect. A specialist should be able to connect the physical feature with a named reference entry. No certified double-impression sale was verified for this guide, so there is no error-price column. Older numbers in a presentation are not refreshed market evidence.

An envelope is a different collecting object

If an Overrun Countries stamp is still on an envelope, photograph the whole front and back before thinking about removal. Keep the destination, postmark date, other stamps and any cachet in the record. Those details disappear when a stamp is reduced to a small cutout. An envelope's description should not simply repeat the loose-stamp table.

A first-day cover is not the same product as a commercially used envelope. Mystic lists a separate Poland first-day-cover option, which confirms the need to distinguish formats. We have not used that option to establish a general cover value, and we have not verified a sale for a particular postal-history item.[2]

For an inherited group, leave its original order intact until the contents have been photographed. A run of flag subjects may reveal a planned set, while a bundle of similar envelopes may have a different purpose. Start with the first-day cover identification guide if the date and printed decoration suggest a commemorative cover.

Build an inventory that answers the next buyer's questions

Create one row per physical item. Include United States as issuer, the flag subject, a tentative Scott number, used or unused status, format, quantity actually counted, visible faults and the source of any price comparison. Use a separate field for unknown gum or an unverified variety. That prevents uncertainty from disappearing when the notes are copied.

For a basic set, tick off all thirteen subjects and attach the whole-set photograph. For a sheet, keep both the full view and the individual-stamp detail. For loose duplicates, count them separately. Do not paste a complete-set retail ask beside every duplicate or add it repeatedly to a collection total.

Store the group so that gum and perforations are not stressed. Choose holders that fit the complete multiple rather than forcing it into a single-stamp space. The next useful step is a clearer description or a matched comparison, not a louder claim about wartime age. An accurately recorded ordinary set can be collected and enjoyed without pretending it is a rare error.

Frequently asked questions

Are the foreign flags actually United States stamps?

Yes, if they have the United States inscription, five-cent value and shared violet frame of Scott 909 through 921. The flag names the honored country, not the issuing authority. A flag in a different frame needs a separate identification.[1][2]

How much is the ordinary complete set worth?

Mystic listed a mint set of thirteen at USD 7.25 on October 18, 2026, stock 345736. Hinge status and grade were not specified. This is one dealer ask, not a guaranteed resale value or a realized sale.[1]

Why is Korea dated 1944 rather than 1943?

The first twelve subjects appeared in 1943. Korea, the final subject, was issued on November 2, 1944. A page with only twelve different flags is not the complete basic set covered here.[1][3]

Does a doubled country name make my stamp valuable?

Not by itself. Klein distinguishes genuine double impressions from ghost or jitter impressions. Match the physical feature with a specialist reference before using a catalog suffix. This guide verifies no current certified error sale or error-price estimate.[4]

Can I use a sheet or block price for a loose stamp?

No. A sheet, a margin block and a single are different physical units. Mystic listed Poland mint singles at USD 0.55, a mint block option at USD 10.00 and a mint sheet option at USD 30.00. The latter option labels do not state stamp counts.[2]

Sources and further reading

Primary references and specialist resources used to prepare this guide.