Perfin
In philately, a perfin is a stamp that has had initials or a name perforated across it to discourage theft. The name is a contraction of "perforated initials" or "perforated insignia".
In philately, a perfin is a stamp that has had initials or a name perforated across it to discourage theft. The name is a contraction of "perforated initials" or "perforated insignia".
In philately, a perfin is a stamp that has had initials or a name perforated across it to discourage theft. The name is a contraction of "perforated initials" or "perforated insignia".
Source: Wikipedia "Perfin" · CC BY-SA 4.0
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