* 1899 Colombia Antioqia, General Jose Marie Cordoba 20c stamp, Scott's #124 / A28 Error Sheet of 50, no vertical perf. Unused sheet. * 1968 #1338 6-cent Flag over Whitehouse burning bush error stamp of 3 unused mint stamps. * 1985 #1856 14-cent Sinclair Lewis Two mint UNused stamps error no perf.
| Category | Vintage & collectibles > Paper ephemera > Stamps |
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