I've had this mercury dime for a very long time and was looking at it thru my microscope and found some doubling of the date. I can almost make out a 1 under the 2. What do you think? Sent from my XT1254 using Tapatalk
Can someone explain what the difference is between a coin that is say a DDO and Machine Doubling? I'm not sure I know what Machine Doubling refers to. Thanks. Sent from my XT1254 using Tapatalk
Machine doubling happens when the die "bounces" on a coin during the strike. It's more of a "smear" than a second strike. Since it can happen at any time to any coin struck, and is extremely common, it's not considered an "error" or anything of added value.
Machine Doubling occurs during the manufacturing (striking) of the coin itself. Doubled Die occurs during the manufacturing of the die - which in turn transfers the doubling from the die to the coin during the coin manufacturing (striking) process.