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Type: stamp Issuer: Slovakia Date: 2018 Denom: ? Visibility: public Image owner: none postage 6/15/2018 1.25€ multi issue=50th Year of the International Chemistry Olympiad unwmk Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/5025/139/50th-Anniversary-of-the-International-Olympics-of-Chemistry.jpg Uploaded July 10, 2018, 6:27 pm by Stan Shebs