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Type: stamp Issuer: Serbia Date: 2015 Denom: ? Visibility: public Image owner: none postage 10/9/2015 23(d) multi issue=00th Anniversary of Patents of Michael Idvorsky Pupin - Dawn of Telecommunications unwmk Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/4519/196/100TH-Anniversary-of-Patents-of-Mihajlo-Idrovski-Pupin.jpg Uploaded January 3, 2018, 4:13 pm by Stan Shebs