I have gas sometimes...
Proof coins should 1) have a mirrorlike background field 2) have a VERY good strike with clear devices and 3) have the edges if the coin squared...
How many are ancients...:)
Doubled on the lips too. MD I think
At what cost though
@Farmergolf if there are coin shows or coin dealers in your area, make a list of the ones you need and find a dealer who has a big bowl of Mercs...
Discolored is correct, sometimes referred to a PMD.
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Coin sadists...
I'll give you $12.99 :):):)
You have LOTS of coins I would give $12.99 for, but the ones from the OP, I wouldn't pick up from a dollar dish at a show.
The most common coins to try cleaning on are copper and silver. Other materials get tricky. Haven't had notable success with any of these.
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