Stamps of Switzerland, 1 Feb 1952
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postage
1952, Feb 1 telecommunications 100th issue unwmk p. 11.5
| X | 5c | redorg & yel | telegraph | |||
| X | 10c | emer & lil | telephone lines | |||
| X | 20 | blgray & lil | antenna mast & radio waves | |||
| - | 40c | bl & ultra | eye & arrows |
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