Image Colnect-5049-243-Digital-telephone--amp--circuit-diagram.jpg
(448 x 325 pixels) |
Type: stamp Issuer: Singapore Date: 1979 Denom: ?
Visibility: public Image owner: none postage 10/5/1979 75c ltgrn&org issue=100th Anniversary of the Telephone d=Digital telephone circuit diagram unwmk perf=13.5x13.25 Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/5049/243/Digital-telephone--amp--circuit-diagram.jpg Uploaded March 22, 2019, 2:58 pm by Stan Shebs |
