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"Longacre Doubling" On Indian Head Cents: The Source

 
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Bedrock of the Community
10045 Posts
 Posted 01/23/2012  8:55 pm Show Profile   Bookmark this topic Add DVCollector to your friends list Get a Link to this Message
Many collectors here have discussed the "doubling" or outlines seen around devices on Indian Head cents.
It's often mistaken for a doubled die, although it looks quite different than real doubled dies.

Longacre doubling


Doubled die (1887 Snow-1):


Rick Snow has just published an article showing an IHC trial strike involving an undated 1859 type IHC hub and a planchet. The result is a piece which clearly shows the features on a hub. This is perhaps the clearest explanation of what causes "Longacre outlines". Rick Snow writes "notice how the field is sculpted away from the letters and devices without getting too close to the letters and devices themselves. This is where the outlines are formed". Elsewhere, Rick Snow has written the outlines vary between dies, depending on how deeply the die was hubbed, and how much the fields were polished before striking coins.

For educational purposes, I have used the photo from Rick Snow's article, then reversed and colorized to help visualize what the hub might look like. Compare the "Longacre outlines" in the first photo to the simulated hub below.

Click to enlarge

Edited by DVCollector
01/23/2012 9:20 pm
Pillar of the Community
United States
4132 Posts
 Posted 01/23/2012  9:53 pm  Show Profile   Bookmark this reply Add CaptainFwiffo to your friends list Get a Link to this Reply
Oh wow, I had no idea the hub was sculpted away in the fields like that. So only the devices get hubbed; the fields are the part where the hub never touches the die. I always assumed the hub looked just like the coin.
Bedrock of the Community
10045 Posts
 Posted 01/23/2012  10:00 pm  Show Profile   Bookmark this reply Add DVCollector to your friends list Get a Link to this Reply

Quote:
the fields are the part where the hub never touches the die. I always assumed the hub looked just like the coin.
I suspect the rough "fields" on the hub do impress in the die, but these are polished away since the fields are the top surface of the die.
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