Describe three obvious things you see in this image of a Lincoln cent date and field. Clues: 1. S----- D------ date. 2. D------ date. 3 C------- Field.
Danomite, posted: "Strike doubled date, damaged date, corroded field." Correct! These are going to get harder.
Will you explain the difference between a Strike Doubled Date and Doubled Die? edit: Nevermind... I get it. Just never heard MD called strike doubling.
Ok, mechanical doubling I get. I've never heard it called strike doubling. Here is a great article with lots of pictures for others, if interested. It specifically says MD is sometimes referred to as strike doubling. https://www.errorvariety.com/OFD/MD.html
Usually, but "strike doubling" is easily confused with "double struck," which is considered a legitimate error. In order to avoid that confusion, "machine doubling" is the preferred term.
The first term (1970's Mint personnel) I ever heard for this characteristic was "Ejection Doubling." Over the ensuing years "Strike Doubled" and then "Machine Doubled" replaced it.
Good quizzes , but one (hour) and done with two replies? Wait a bit longer to give others a chance to chime in, then reveal the correct answer
OK but here is what happens... Post a quiz, get the correct answer after a few replies. Then, everyone replies with the EXACT same answer. After the correct answer is made, unless someone disagrees or want's to add something, what's the point?
You make a good point. But you assume that we will agree with someone else's answer all of the time. I wouldn't make it so obvious by giving clues like you did. Let everyone describe what they see without any clues and see how many different things people come up with.
I always heard it called Ejection Doubling. Slight vibration of die as coin is getting ready to leave the press.
