Adding a mintmark is a common way to alter a coin. Mintmarks can be added by using solder, glue, electric arc, etc. Some crafty counterfeiters...
Hard to say with those photos. Can you post photos taken straight on (rather than at a slight angle - see reverse photo) and without the glare?...
To understand error coins and how they occur you must first understand how dies and coins are made. There are plenty of sources (books, on-line,...
Canadian nickels minted prior to 1959 are magnetic. US nickels are not magnetic because they are 75% copper.
I agree with your assessment.
It would be next to impossible for a cent to be struck on a nickel planchet because a nickel planchet is much larger than a cent and would not fit...
Proofed? Grey Sheet for a 1951 Dime in PF-65 is $40/$44. $50 doesn't sound out of line for a PF-66 (if the coin is actually a PF-66 and not some...
You made somebody's day.
CONECA is one of the best resources for information on error coins.
My bad. Still there is nowhere near $3,000 worth of coins listed. I bet you could buy the same coins from Littleton for less than $3,000. (OK,...
Like was stated on your other thread with the same question - - - about $3.
The 1990 Eisenhower Dollar might be worth $3,000 if it is genuine because production of Ike Dollars ceased after 1978.
They all appear to be AT (Artificial Toning) - chemically applied to the coins.
That could explain the granular surfaces.
I am not familiar with this coin. The photo of the reverse is out of focus. The obverse surfaces appear to be grainy which could be an indication...
Start with whether the coin is attracted to a magnet. If not then it is not steel.
What is Silver Spoons?
Simply removing the leg should not fool an educated collector. There are several die markers to look for on a genuine example (e.g., die polish...
Grey Sheet is $23.50 in G. Somewhat less than that for a harshly cleaned coin.
I was in the pawn shop back in January and what little coins they had were nothing special and were all overpriced.
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