Watch List notes:

GREECE: Strip of 5x50 Lepta (ND 1920) in blue with standing Athena at center. Square perforation. S/N: T/4 452046-452050. Printed by Aspiotis. Inside plastic holder by PMG "About Uncirculated 55 - EPQ". (Pick 303a1) & (Stratoudakis / Pitidis 263a).