This coin should be authenticated by a numismatic expert.
Uncirculated pieces are very scarce and are worth more than $1500. It’s worth at least $400 in average circulated condition. This coin error is very popular with collectors because of its unusual appearance, especially on the Philadelphia example. The 1942-D overdate will have the “2” in “1942” almost completely over the “1” and the “D” mintmark will have been repunched, that is stamped over a “D” that was placed in the wrong position. Silver Coins: When They Ended and What They’re Worth