Perforated - 11 1/2
Hradčany stamps with perforation type D ŘZ 11½ form a distinct perforation group within the first Czechoslovak issue.
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Hradčany perforation D ŘZ 11½ represents a separate perforation density group.
Type D perforation specifics
This group is characterized by different perforation spacing and related production features.
- perforation D ŘZ 11½
- perforation density differences
- printing and production analysis
- specialist-level collecting
A key category for advanced Hradčany collectors.











