Stamp Finder ↺ Scott or Y & T ? Education 1967 Regular and Airmail Stamps (December 11, 1967) Sc 575 / YT 588 Sc 576 / YT 589 Sc 577 / YT 590 Sc C285 / YT PA358 Sc C286 / YT PA359 Sc C287 / YT PA360