A comparison of three coins struck from the same die showing the diminishing frost.
Early strike:

Later stage:

Even later stage:

All three examples have the superior mirror depth for which the Birthmark Die is known, but show dramatically different degrees of contrast based on the device frost. I'd imagine that it wasn't very many coins after that last one before the obverse fell in to the technically brilliant category.
Russ, NCNE

Later stage:

Even later stage:

All three examples have the superior mirror depth for which the Birthmark Die is known, but show dramatically different degrees of contrast based on the device frost. I'd imagine that it wasn't very many coins after that last one before the obverse fell in to the technically brilliant category.
Russ, NCNE
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Comments
Do you think they were struck in succession?
very nice
Liberty: Parent of Science & Industry
Illustrated very nicely. I'd be curious as to how many were struck between each coin shown.
<< <i>Good post! I'm going to have to find me one of them.
Good luck! Easy for him to show the progression; since he has most of them. I had one, thought it was defective, and sent it to Russ for Ebay disposal.
I would imagine that die pair had the shortest run of the entire Kennedy series.
Joe
Interesting never-the-less.
Tom
Pretty cool. You should buy the rest of them and put them all in strike order
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since 8/1/6
President, Racine Numismatic Society 2013-2014; Variety Resource Dimes; See 6/8/12 CDN for my article on Winged Liberty Dimes; Ebay
<< <i>Pretty cool. You should buy the rest of them and put them all in strike order >>
It is fun to line up the 11 I have so far and compare them.
Russ, NCNE
<< <i>I wonder where this one fits in. >>
AFTER this one:
Russ, NCNE