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Does every old envelope have sulfur in it? How can you tell?
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<p>[QUOTE="C-B-D, post: 3567713, member: 43130"]If you have an old bust half that is overdipped, as in blast white, you can put it in an old Whitman envelope where it will regain some tone. It will NOT give it crazy colors, but will darken or crust it up a bit. This is frowned upon by some, but considered conservation by others, since you are restoring the coin to the state it was in before it was ruined with dip. The key is to intervene minimally.[/QUOTE]</p><p><br /></p>
[QUOTE="C-B-D, post: 3567713, member: 43130"]If you have an old bust half that is overdipped, as in blast white, you can put it in an old Whitman envelope where it will regain some tone. It will NOT give it crazy colors, but will darken or crust it up a bit. This is frowned upon by some, but considered conservation by others, since you are restoring the coin to the state it was in before it was ruined with dip. The key is to intervene minimally.[/QUOTE]
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Does every old envelope have sulfur in it? How can you tell?
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