Co- winner of the 1962 Nobel Prize for Physiology and Medicine for the discovery of DNA. Original signed and inscribed ballpoint sketch of a detailed DNA strand on an off-white 8.5 x 11 sheet of Cold Spring Harbor Laboratory letterhead. Watson adds some information to top of sketch and “A human chromosome has some 10(8) (100,000,000) base pairs along its simple DNA molecule. Jim Watson,” underneath his sketch. In very fine condition, with two mailing folds, not affecting sketch or signature. First DNA sketch we have ever offered and not sure when (or if) we will see another one! R&R COA.
