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Do you think you have a Doubled Die?

messydeskmessydesk Posts: 17,032 ✭✭✭✭✭

One question that comes up frequently is whether something is a doubled die or just machine (or mechanical, or ejection) doubling. These are two really good guides for answering that question. Since a picture is worth a thousand words, I'll start with this diagram by Charles Daughtrey (coppercoins.com) illustrating the difference between machine doubling and a doubled die (called "hub doubling" in the diagram).

I'll follow that with this link to a monograph by JT Stanton about doubled dies and their evil mimics. JT wrote this years ago, and it's still an outstanding article about the differences. I include it as an appendix to the class notes of the Morgan Dollar class I teach at the ANA Summer Seminar.

If this is question encountered frequently enough that the mods think this is worth pinning in this forum, great. If not, that's fine, too.


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