Czech chemist (1890-1967) who won the 1959 Nobel Prize for his discovery and development of polarographic analysis. Vintage ink signature, “J. Heyrovsky,” penned at the bottom of a letter written by his wife in Czech, one page on the reverse of a 5.5 x 3.5 postcard, September 12, 1952. Untranslated letter concerning the family's holiday in Sofia, Bulgaria. Each member of the Heyrovsky family has signed at the conclusion. In fine condition. Accompanied by a full letter of authenticity from PSA/DNA.
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