German pharmacologist and psychobiologist (1873-1961) who was awarded the Nobel Prize in Physiology or Medicine in 1936. Rare vintage pearl-finish 3.25 x 4.5 close-up photo of Otto Loewi in later age, signed in the lower border in fountain pen, "O. Loewi." Reverse is dated to September 1948. In fine condition, with faint silvering to the darker areas of the image. The first Loewi signed picture we have ever offered.
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