I hope I'm in the right area to post this. With double die's is it correct to say that a coin is dd if the doubling continues through an entire phrase like "IN GOD WE TRUST" but not if it stops early in the phrase? Just kind of confuses me like with the penny that has doubling only in the last three colums of the lincoln memorial. Not continuous throught the whole memorial but considered double. Could someone please explain the difference? Thanks.
No. Sometimes you will find that only some of the letters will be doubled. If you have access to the Cherrypickers Guide, take a look at some of the DDO's & DDR's. There is no rhyme or reason in the "doubling scheme of things". Also, if you have access to a copy of the Comprehensive Catalog and Encyclopedia of Morgan and Peace Dollars by Leroy Van Allen and A. George Mallis, there is a section that describes the die making process on pages 56-58. Chris
Everything you could ever want to know about doubling, and then some: http://www.coinbidders.com/Strike Doubling Flyer - PDF.pdf
Doubling should be rounded creating an exact copy of the part of the coin that is dd. double strike would be very flat because it was struck by the field of the die....i think
The "rhyme and reason" behind doubling has to do with the "type" of doubling which occured on the die. Rotated Hub Doubling, with a pivot point close to the center, would have similar doubling on all devices on the coin whereas rotated hub doubling with a pivot point offset from the center would not. Compare the doubling on the 55/55 with the doubling on the 95/95. Likewise, if the distorted hub doubling may have doubling on only one area of the coin. When looking for and at doubled die's, it helps to study the various "types" of doubling which occurs and how they actually came about. There are currently eight classes of die doubling which are adequately explained in any coin variety book.
There is an excellent article in the new Die Variety News this month on Class 1 Doubling (Rotated Hub Doubling) Click on the magazine Cover to open it or save it to your computer in PDF format http://www.dvnmagazine.com/ Terry
