A USSR stamp, Nobel Prize Winners in Physiology or Medicine
<p>Date of issue: 14th May 1991. Designer: Yury Artsimenev. Michel catalogue numbers: 6197-6199.
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15 K. multicoloured. Portrait of I. P. Pavlov, 1849-1936. (medicine, 1904).
Scanned and processed by <a href="//commons.wikimedia.org/wiki/User:Mariluna" title="User:Mariluna">Mariluna</a>
11 September 2007 (original upload date)
Personal collection