Explorateur de timbres ↺ Scott or Y & T ? Marine Life 1973-1976 Regular and Airmail Stamps (September 4, 1973) Sc 669 / YT 732 Sc 670 / YT 733 Sc 671 / YT 734 Sc 672 / YT 735 Sc C395 / YT PA510 Sc C396 / YT PA511 Sc C397 / YT PA512 Sc C398 / YT PA513 Surcharge (1976) Sc C439 / YT PA552B