82-2.2x, 1982 U.S. National Christmas Seals Sheet, pm F, dull gum
Lamour (Dull) Satin Table Linen in Bubble Gum 1688
1393Dv Benjamin Franklin, Dull Gum | Dennis R. Abel - Stamps for Collectors, LLC
US 1305E MNH VF 15 Cent Oliver Wendell Holmes Dull Gum Type II CV$1.50 | United States, Back of Book (Other) - Proofs & Essays - Essays Stamp / HipStamp