Are dug coins key dates worth anything?

cudamark

Gold Member
Mar 16, 2011
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Never clean a coin with any kind of cleaner, etc. That lowers the value. Easiest thing to do is check with a coin dealer on anything you find. A corroded Jefferson isn't going to have much market. Probably more value in your collection for bragging rights... ;)
Never say never. There are times when cleaning will improve the value of a coin substantially. You get something totally encrusted to where you can see any detail including the date, and it's pretty much worthless. You clean it and find a rare date/mint mark, and it will have more value than a totally featureless metal disc.
 

PastorBillV

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Jul 7, 2021
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Never say never. There are times when cleaning will improve the value of a coin substantially. You get something totally encrusted to where you can see any detail including the date, and it's pretty much worthless. You clean it and find a rare date/mint mark, and it will have more value than a totally featureless metal disc.
Note that I said with a cleaner. Yes, removing crust carefully, indeed, helps value. But cleaners change the surface and lower value.
 

cudamark

Gold Member
Mar 16, 2011
12,317
12,193
San Diego
🏆 Honorable Mentions:
3
Detector(s) used
XP Deus 2, Equinox 800, Fisher Impulse AQ, E-Trac, 3 Excal 1000's, White's TM808, VibraProbe, 15" NEL Attack, 5X10 Joey, Steath 920ix and 720i, TRX, etc....
Primary Interest:
All Treasure Hunting
Not always. I've seen real blotchy looking tarnish or other uneven patina on a coin detract from a coins eye appeal and value. After a dip in Jeweluster or similar, the eye appeal and value went up, sometimes dramatically. That doesn't apply to every instance, but, many times it does. It most depends on the purchaser and what they think looks good.
 

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