Switzerland, 1000 Franken, 1987, AUNC, p59d
PCGS 58 OPQ, serial number: 87M0491812, Auguste-Henri Forel portrait at right ( He was a Swiss myrmecologist, neuroanatomist, psychiatrist and eugenicist, notable for his investigations into the structure of the human brain and that of ants)
Estimate: $ 1500-3000