Someone recently asked what would happen to Coins in the usual Plastic Envelopes in a modest fire..eg would the Plastic Coin Envelope completely adhere to the Coin This is what happened after 30 minutes in a cooker wrapped well in kitchen foil The Plastic Coin envelope did peel away from the coin but was totally black and the Coin was blackened as well The Acid Free Paper Coin Envelope (Chris sells these by the 100) was pretty well intact and the Coin looked intact as well I am now thinking that Quality Acid Free Paper Coin Envelopes are a good storage method Any opinions ?