Note the affected areas reduce the size of the devices. Also, it shows only on the edges of the devices. A doubled die would show spread in the centers of the devices.
Variety Vista only lists DDR's on two years reverses on the Roosevelt dimes: http://www.varietyvista.com/07%20Ro...Listings.htm Since 1970, just a few years have DDRs on the dimes. The 2014 & 2014 areas affected with hub doubling is only in the central area of the reverse. Wexler's site lists a several more: http://www.doubleddie.com/499555.html But nothing so far of 2018. Mostly confined to the olive leaves and torch area. (again only on the central device areas.
Machine doubling. The DDRs are on the central areas of the design because they are the single squeeze die process. MD reduces the size of the devices on the outsides of the devices.
Wow! I didn't even realize this was my old post, I just went about reading it. Amazing how much I've learned in just a year. Thank you all for your part in that.
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