Image Colnect-1970-641--quot-h-quot--a-symbol-for-physical-quantum-effect.jpg

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Type: stamp Issuer: German Democratic Republic Date: 1958 Denom: ? Visibility: public Image owner: none postage 4/23/1958 10pf grngray issue=Planck 100th d=h (Planck constant) wmk=quatrefoil & DDR Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/images/b/1970/641/-quot-h-quot--a-symbol-for-physical-quantum-effect.jpg Uploaded May 22, 2014, 9:25 pm by Stan Shebs