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Series details
Identity
- CodeSeries code YYYY.ENT.SS — year, 3-letter issuing entity, sequence (e.g. 1900.CGH.01).
2023.GNB.03- EntityPostal authority that issued the stamps (country, territory, or historical entity).
- Guinea-Bissau (GNB)
- Year
- 2023-10-09
- TypeIssue kind. Charity issue = postage + voluntary surcharge (e.g. 6+4), not an overprint.
- Agency commemorative
