Backings for First Day Covers. U.S. Cover #10 Envelope. 4-1/4 x 9-3/4". .040" thick Acid Free Board. Indefinite Storage.
Details
Backings for First Day Covers - U.S. Cover #10 Envelope.
4-1/4 x 9-3/4"
.040" thick Acid Free Board.
Board is all white. Acid-Free, lignin-free, buffered.
Use for Indefinite Storage.
Use with Polyester (mylar) sleeve SFDCUS10PETF
4-1/4 x 9-3/4"
.040" thick Acid Free Board.
Board is all white. Acid-Free, lignin-free, buffered.
Use for Indefinite Storage.
Use with Polyester (mylar) sleeve SFDCUS10PETF