does your avatar give us a hint? 1817 Bust Half, AU-50, PCGS, $325, ......456
Post a coin you wished you owned Mine would be a 1796 or 1797 half dollar in 2nd place would be a 1796 quarter dollar 3rd place would be a...
in change I finally got a District of Columbia quarter in change. Denver mint. Haven't seen any territorial quarters except in coin stores.
liquid courage If you need an ethanol solvent, Rossvile Gold Shield (191 proof) can be used. And properly diluted (say 1:1) with a splash of...
removing mass Originally Posted by physics-fan3.14 (much wonderful stuff snipped) When a toned coin is dipped, it is the thin film that is...
World War II Emergency Notes In Gem Unc (66 and up) conditions, $1 Hawaii (Fr. 2300) notes start at $200+ in Good condition ~$20 in Very...
best technical post ever I agree, this could be an excellent article for the Numismatist. As far as surface "oxidation", some metal oxides...
tuba dips but did it still have luster? ;)
Hawaiian $ on the question as to why this note is so much (and in the assumption that you are not familiar with them), US Currency that...
a bridge too far? I'm impressed. It does seem to be a way to use up all those post 1982 zinc/copper cents.
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