Answering the question of how to identify flat plate and rotary stamps – Linn’s Stamp News
Linn’s Stamp News |
Answering the question of how to identify flat plate and rotary stamps
Linn’s Stamp News It was not until 1923 that sheet stamps were intentionally produced by the rotary press. Rotary-produced sheet stamps before that (see Scott 538-546) were made from coil waste, meaning parts of the rotary coil web that were excess to coil production … |
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