Stamporama Discussions: Are the sleeves for covers from the Postal Commemorative Society archival?

General Philatelic/Supplies, Literature & Software : Are the sleeves for covers from the Postal Commemorative Society archival?

Author

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amsd

Editor, Seal News; contributor, JuicyHeads
11 Mar 2018
08:49:59pm
Auctions

Trying to determine if the sleeves in which covers issued by Postal Commemmorative Society are archival or will they harm the covers?

I'll likely remove the covers and house other covers in there IF they're archival

"Save the USPS, buy stamps; save the hobby, use commemoratives"

juicyheads.com/link.php?PLJZJP

Author/Postings

amsd

Editor, Seal News; contributor, JuicyHeads
11 Mar 2018
08:49:59pm

Auctions

"Save the USPS, buy stamps; save the hobby, use commemoratives"

juicyheads.com/link. ...