Colnect-139-761-Riggenbach-Niklaus-1817-99-inventor---engineer.jpg What: stamp
Type: Switzerland semipostal 12/1/1942 5+5(c) issue=Pro Juventute 1942 d=Niklaus Riggenbach unwmk perf=11.75

State: used

Visibility: public



Owner: Stan Shebs




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