Image Colnect-3169-013-Progress-in-Electronics.jpg
(1024 x 653 pixels) |
Type: stamp Issuer: United States Date: 1973 Denom: ?
Visibility: public Image owner: none postage 7/10/1973 15c multi issue=Progress in Electronics dt=electronics progress d=early microphone, radio tube, TV camera tube, radio speaker unwmk perf=11 Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/3169/013/Progress-in-Electronics.jpg Uploaded May 19, 2016, 3:42 pm by Stan Shebs |
