Watch List notes:

SWITZERLAND: 10 Franken (1979) in orange-brown and multicolor. Leonhard Euler at right on face. S/N: "79L 6092442". WMK: Leonhard Euler. Signatures by Wyss & Leutwiler. Printed by OFZ. Inside holder by PCGS "SUPERB GEM UNC 68 PPQ". (Pick 53a).