Perforated - 13 3/4 : 13 1/2
Hradčany type A stamps with perforation HZ 13¾ : 13½ represent a specific perforation variant of the first Czechoslovak stamp issue.
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Hradčany type perforation A HZ 13¾ : 13½ is a specialized area of classic Czechoslovak philately.
Perforation variants of the first issue
Collectors focus on precise perforation measurements, printings, and paper differences.
- type A Hradčany stamps
- perforation HZ 13¾ : 13½
- printing and paper varieties
- advanced specialist collecting
A key subgroup of the Hradčany issue.