Stamps, Austrian Inventions design type
1 to 3 of 3
Austria
postage2012, Oct 13 Austrian Inventions unwmk
| - | 62 | multi | incandescent gas lamp & Carl Auer von Welsbach | |||
| - | 70 | multi | sewing machine, p. 14 | |||
| - | 80 | multi | Screw propeller by Josef Ressel |
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