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Is this machine doubling ?? Seated half

Or part of the design of the Eagles feathers?

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machine
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Edited for spelling ...
See http://www.doubledimes.com for a free online reference for US twenty-cent pieces
Looking for Top Pop Mercury Dime Varieties & High Grade Mercury Dime Toners.
Let me see if I can find a thread that explains it better.
TD
If these were dies impressed by those hubs, and the dies were then basined (i.e., polished by being held against the center a revolving, slightly concave polishing stone), the outlining would theoretically get polished away, leaving just the design or lettering in the die.
Longacre Doubling linky
TD
I think I have heard Longacre Doubling mentioned just a couple of times (max) on the forum since I joined 3.5+ years ago and I had forgotten about that term, if I even recall it correctly. I will have to do some digging and reading. Thanks for bringing it up Capt.
Looking for Top Pop Mercury Dime Varieties & High Grade Mercury Dime Toners.