| Gabriel Lippmann Stamp from Sweden honors Gabriel Lippmann [1845-1921], Franco-Luxembourgian physicist and inventor (Nobel Prize in 1908 for "his method of reproducing colours photographically based on the phenomenon of interference") 1968, 10 December (date of issue) Postage stamp Private collection of Krzysztof Slowinski LL/38058 Catalog number: Michel 427
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