I am getting more comfortable with being able to tell the difference between the different doubling there are out there. I still catch myself from time to time. Here if I look at the E in Liberty it appears to be a TDO. I can catch a good strike doubling but this is too close for me to be able to tell. There are 3 clearly obvious lines and they appear to be flat to me. Can you have a triple strike doubling? Is it possible or is this a true TDO? It only appears on this side of the coin.
It would seem to me that it is possible to have more than one "layer" of machine doubling. It depends on the speed of the vibration of the die compared to the speed of the planchet moving through the coining chamber. What do others think? ~ Chris
It appears to be mechanical doubling from a worn die. I can’t see any notching in the letters or the date IMHO. A pic of the full obverse and reverse would help with further diagnosis. I would also for a consensus from the experts here.
@Bambam8778 I can't answer your question directly but is there another meaning for TDO except for "Trail Die Obverse" as an acronym that I might be missing? Honest question.
Tripled die obverse @tommyc03 . I never heard of it until I started looking at these older Jefferson's I set aside.
Heres an S penny I found with multiple mechanical layers. Its a good example. The way a "doubled die" is created, its impossible to get these features....even though at first glance it sure looks wildly compelling.
I wouldn't have even questioned that one. I have a long way to go with doubling but I've come a long way also. It's what I'm concentrating on at the moment so I'm sure I''ll have more posts to come.
