Another I Need Help With 1967 Lincoln Blank Back

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Author	Replies: 5 / Views: 1,020
BigKidsKollect Valued Member United States 78 Posts	Posted 02/04/2017 7:38 pm thanks in advance Report this Post to the Staff

Mark1959 Pillar of the Community 7234 Posts	Posted 02/04/2017 8:00 pm Ground off somehow as the lines show - somebody did not like that coin!! Weight? Report this Post to the Staff
Druu Pillar of the Community United States 1000 Posts	Posted 02/04/2017 11:02 pm PMD. It's not possible for only one side of a coin to be struck. Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 02/05/2017 01:03 am Actually it IS possible, but the final result doesn't look like that. Report this Post to the Staff
Druu Pillar of the Community United States 1000 Posts	Posted 02/05/2017 01:34 am How? The planchet would have to be sandwiched between two hard surfaces. Both sides of the planchet would have to physically strike something, right? And if both sides of the planchet contact something, one side will not look like an unstruck planchet, or blank in this case, as there's no rim. This is what I've found searching the forums: http://goccf.com/t/172887 (Emphasis added.) Quote: As for the theoretical question posed by the OP: no, you can't have a coin "struck on one side only". You can have a brockage (which bears a mirror-incuse depiction of the opposite side) and you can have a capped die (here a coin gets stuck on one die and repeatedly hammered into place). You can even have yourself a split planchet, with the other side all rough, torn metal. But what you can't have is a nice, neat perfectly formed image of one side and a blank planchet-like surface on the other. The creation of a coin requires it to be smashed between two dies and if one of the dies is missing completely, there's nothing for the other die to smash against. Truly uniface coins can only come about if someone in the mint deliberately creates a "blank die" and inserts it into a coin press. A far more likely explanation for any coins that seem to be "struck on one side only" is that someone has ground off the missing side, post-mint. Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 02/06/2017 09:11 am If two planchets enter the coining chamber at the same time you will get a coin struck on one side, but the blank side will not be perfectly flat nor will it look like an unstruck planchet. For one thing there is a little room for side to side play in the coining chamber so the two planchets most likely will NOT be exactly one on top of the other. Secondly as the coins are struck and the planchets expand out toward the collar they are not both going to reach the collar at exactly the same time and all the way around. So in some areas one planchet will get there first and start spreading, the other planchet will get there first in other areas. So in some areas the edge will "cup" upward and in others it will cup downward. So the blank side will not be perfectly flat. Nor will it cup up or down all the way around. Finally with two planchets in the coining chamber the strike on the side withthe design will be very bold, and most likely the upper planchet will not be down completely inside the coining chamber so it will show a partial collar as well as an unstruck side. Report this Post to the Staff
	Replies: 5 / Views: 1,020

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