Colnect-140-687-Othmar-H-Ammann-1879-1965-building-engineer---bridge.jpg
Source: Colnect
Issued by: Switzerland
Function: postage
Date: 2/21/1979
Issue: Othmar Ammann 100th
Denom: 20(c)
Color: multicolored
Design: bridge & Othmar Ammann
Watermark: unwmk
Perf: 11.5
Catalog value:

In collections: used (Stan Shebs)

External links:
Colnect 23059-..Current_Events