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Message:: [QUOTE="bhp3rd, post: 827764, member: 16510"]No machine doubling can and does occur on any coin any time there is movement of the dies during striking scooting, flopping, pushing, pulling at, during or right after striking of a coin.What cannot happen is a true doubled die including the mintmark before the early 1990's.  Doubled dies occured during hubbing, mintmarks are added after hubbing.  Doubled dies can occure (see 1995-D DDO-003) on modern coinage because the hubbing takes place with the minmark already added to the master die, hubb or galvano.  The minmark is now in place during hubbing of the die, it was not before and on your coin.Therefore we look at the movement of the "D" in this case and get a hint that it's machine type doubling we then try and find other design element moved in that same direction. We prove the mechnical doubling then by knowing that this happend during striking and not punching because it happen after the mint tech placed the mint-mark on that die.The doubling of your coin's mint-mark could not have happened during the punching phase because it happened during the strike, we have used our knowledge to prove it by finding other same movement of adjacent (close by) numbers or lettering that mimic rather than set apart the doubled appearence of the "D". [/QUOTE]