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1. Imperforate (Perforations, roulettes or die cutting)This means there is no evidence whatsoever of holes (or slits, in the case of roulettes, or die cuts, in the case of modern self-adhesive stamps).There are three variants:
![]() ![]() ![]() Type 1: Three types of imperforates: Upper left: Imperforate sheet stamps (Scott 1622b); Upper right: Horizontally imperforate (Scott 538c); Bottom: Imperforate between otherwise normally perforated coils (Scott 2281d).
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