Switzerland, 1000 franken, 1993, serial number 93L1190737, purple on multicolour underprint, portrait of Auguste Forel at right, reverse ants and ant-hill schematic on vertical format,(Pick 59f), PMG 65EPQ, gem uncirculated, popular and sought after banknote, difficult to find..
Estimate: $30,000.00 - $40,000.00