U.S. Scott 825, 810, 807 Prexies on Registered 1950 Cover

U.S. Scott 810(2) and 807 Prexies on U436 Air Mail Cover

U.S. Scott 810 and 632 on 1954 Abington, Massachusetts Airmail Cover

U.S. Scott 815, 810 Prexies On Registered 1943 Penalty Envelope

U.S. Scott 825, 810, 806 Prexies on Registered Return Receipt 1946 Cover