Acetone dissolves grease and so helps remove dirt. Unfortunately, it leaves the surface of the coin completely open to the atmosphere, your breath...
The sharpness is very close to Extremely Fine. Unfortunately, the damage - long and deep scratches and a dent on the lowest hair curl -...
It's fascinating to me that we are having a big "discussion" over the issue of a sticker on a slab and how opinions as to quality have drifted...
There are a number of factors. The most important is to write a book that you wish you could read. Others will probably feel the same. You should...
Probably the Grading Guide for Early American Copper Coins is the most useful book these days for EAC. It illustrates all of the major types in...
Acetone just removes all of the oils from the surface and thereby leaves it open to easy corrosion. I wouldn't send a coin to be slabbed that had...
Since “PVC crud” is actually corrosion, you should have it conserved.
Of course. That doesn't change my meaning, however, that scarcity and rarity are context-dependent.
ex-EHR Green, Eric Newman.
Since these scales are all human-made, they can be defined any way we want. Yes, in numismatics, scarce generally means more common than rare....
In Early American Coppers, a few years ago, one of our members did a project on the envelopes used by current and past collectors for exactly the...
I hate to be too obvious, but... I give you our nation's symbol: The broad-winged chicken! [ATTACH]
V. Kurt Bellman pointed to the 800 pound gorilla in the room. I wondered when someone would. All toning is actually corrosion and thus damage to...
It seems that your question is whether or not intentionality makes the difference between natural and artificial toning. I would say it does not....
Nice example, Edouard.
Fine.
Photos are out of focus, but it appears to be a copy of the Mark. Definitely a crude copy.
It still looks dry to me. Try a little mineral oil and a light brushing. Don't remove all of the oil, as that will protect the coin. Personally, I...
I'll be there.
Anything acetone will do, it will do quickly. A couple of minutes or less. It will not remove PVC “residue,” which is not residue but corrosion....
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