Thread: Ultra Pro Penny Sleeves PVC/Acid Free?
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Old 10-12-2013, 07:22 PM
steve B steve B is offline
Steve Birmingham
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Join Date: Sep 2009
Location: eastern Mass.
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I don't have an old package handy, but the new ones are clear about it.

Are you sure they're ultra pro?

http://www.ultrapro.com/product_info...oducts_id=1623

If it's made of polypropylene or Mylar, (a form of polyester) it's just fine.

Steve B
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