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  • Backings for First Day Covers. U.S. Cover #10 Envelope. 4-1/4 x 9-3/4". .040" thick Acid Free Board. Indefinite Storage.

Backings for First Day Covers. U.S. Cover #10 Envelope. 4-1/4 x 9-3/4". .040" thick Acid Free Board. Indefinite Storage.

SKU: KAF40US10
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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

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