p59b: 1000 Franken from 1980

1980 (52, 53, 54). Purple on multicolor underprint. Auguste Forel at right, diagrams through a brain and a nerve cell at left. Back: Ants and ant-hill schematic on vertical format. Watermark: Auguste Forel. Printer: OHZ.

• Country & Pick Number:Switzerland p59b
• Denomination & Currency:1000 Franken
• First Year of Issue:1980
• Issue Type: Regular Issue