Stamps of Switzerland, 31 base day
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postage
1932, May 31 St Gotthard 50th issue wmk. Swiss cross p. 11.5
| X | 10 | redbrn | Louis Favre | |||
| X | 20 | ver | Alfred Escher | |||
| X | 30 | dpultra | Emil Welti |
2004, Mar 31 unwmk (no perf info)
| - | 100 | multi | Swiss Design classics - 'Landi' chair |
2007, Oct 31 Stamp Link to the Internet issue
| - | 100 | multi |
2013, May 31 2013 IIHF Ice Hockey World Championship issue
| - | 100 | multi |
semipostal
1952, May 31 1952 semi issue p. 11.5 (5 stamps)
| X | 5+5 | blk & red | arms of Switzerland, arms of Glarus (canton), arms of Zug (canton) | |||
| X | 10+10 | dpgrn | Doubs | |||
| - | 20+10 | Lake St Gotthard | ||||
| - | 30+10 | dkbrn | Moesa | |||
| - | 40+10 | dkbl | Märjelensee |
1958, May 31 Pro Patria 1958 issue (no perf info) (5 stamps)
| - | 5+5 | brncar | mother & child | |||
| - | 10+10 | multi | fluorite | |||
| - | 20+10 | multi | ammonite Orthosphinctes laufenensis | |||
| - | 30+10 | multi | Almandine | |||
| - | 40+10 | multi | smoky quartz |
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