Watch List notes:

GREECE: 50 Drachmas (1.10.1964) in blue and purple on multicolor unpt. Arethusa at left on face. S/N: "17Φ 610826". WMK: Youth of Anticythera. Printed by the Bank of Greece. Inside holder by PMG "Superb Gem Unc 67 EPQ". (Hellas 195) & (Pick 195a).