Ran this on a previous thread a couple days ago. Not very many responses so thought I would tighten it up a bit. Subject is reverse E PLURIBUS UNUM on 2015 D Nat. Park quarter. Is that mechanical tripling ?
Conceivably, it is possible if the die was very loose. What do you think @Fred Weinberg ? @paddyman98 ? Chris
heres from an online resource, I was curiouse also. triple struck. In the normal process of striking coins, a blank planchet is struck once by the dies, then ejected. If a coin is not ejected properly it can be struck again. Coins can also be struck multiple time
DDO is a coin Variety caused by hub doubling not by machine doubling. Check out this info. http://doubleddie.com/58222.html
No The Quarter in question is a totally different issue and nothing to do with your explanation. But nice try.