What is the value of a 1946 penny with two tailed sides?

Answer 1

With modern minting methods it just about impossible to produce a "double header" coin, unless one of the sides has the design "incuse" as a result of the previous coin not having been ejected from the die before the next coin was dropped in.

Any coin with a "genuine" minting flaw would have some value, above the usual, as a collectible coin.

Genuinely flawed coins are not necessarily known about or documented until somebody turns up with one, since they are an "accident" of the minting process, and have escaped detection during quality control at the mint therefore, a valuation cannot be anticipated.

A reputable coin dealer should be able to identify and confirm the coin as genuine and make a valuation.

Flaws and errors on coins should not be confused with mutilation or mangling of the coin.

It should be noted that many people have the interest, skill and enthusiasm to fraudulently alter otherwise normal coins for the purpose of personal gain or notoriety.

Also, many coins are commercially produced for magic or trick purposes and these include "double headers/tails" and "impossible" coins like a US silver Dollar on one side and a British copper Penny on the other.

Answer 2

It is extremely unlikely that a coin will have exactly the same image on both sides. Because of the way that the dies work, it is not possible. It is most likely a trick coin available from magic shops.

Alternatively, if the second image is reversed and indented rather than raised on the coin, it may be the result of a coin being struck while the previous coin was still caught in the die, in which case, it may be worth something.