Plate number
This strip from a sheet of US stamps from 1895 shows they were printed with plate number 170.
A plate number is a number printed in the margin of a sheet or roll of postage stamps which shows the printing plate used to print the stamps.
A plate number is the serial number of a printing plate. It is printed in the selvage or border of a pane of postage stamps.[1]
Philatelists and stamp collectors analyze or collect plate numbers and stamps with different plate numbers. The American Plate Number Single Society (APNSS) is an example of a specialist philatelic society which focuses on plate numbers. APNSS is affiliate #178 of the American Philatelic Society[1]
Notes
- 1 2 "The American Plate Number Single Society". Retrieved December 13, 2010.
External links and further reading
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