Stamps of Singapore, 100th Anniversary of the Telephone issue
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postage
1979, Oct 5 100th Anniversary of the Telephone issue unwmk p. 13.5x13.25
| - | 10c | multi | Early telephone overhead cable | |||
| - | 35c | multi | telephone dial world map | |||
| - | 50c | bl & yelgrn | Push-button telephone city scene | |||
| - | 75c | ltgrn & org | Digital telephone circuit diagram |
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