Here is a very useful map of Prussia (Germany) showing changes to its borders from 1871 (Unification) to 1920 (Republic).
“...At once authoritative and compelling." Royal Mail’s British Philatelic Bulletin |hello@philatelicdatabase.com
Here is a very useful map of Prussia (Germany) showing changes to its borders from 1871 (Unification) to 1920 (Republic).
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