1990 Proof Quarter Doubling | Type?

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Author	Replies: 7 / Views: 820
bobby131313 Forum Dad United States 24194 Posts	Posted 03/24/2008 10:48 am 1990 Proof Quarter Is this real doubling or mechanical? Shop CCF Members on eBay. Report this Post to the Staff

coop Bedrock of the Community United States 62064 Posts	Posted 03/24/2008 11:16 am It has the pattern of Machine Doubling with the shelf look and the un-notched corners. But on proof coin I usually think of Strike Doubling. Being the coins are struck multiple times they suffer from this. Machine Doubling is cause by a machinery malfunction. Proof coins from a striking malfunction. I've never read about this explanation, but it is just my idea on the Strike Doubling. It the die had been hub doubled then all coins made from that coin would be a doubled die. In this case, the die is not doubled, the striking is doubled. Just what I see on your coin. I've seen it happen on a lot of proof coins and always get my heart racing at first. Then realize what it is and the OH....... sets in. Report this Post to the Staff
toniblab Valued Member United States 336 Posts	Posted 03/24/2008 11:18 am i got a 1969 s proof penny like that.i think its a repunch die.like found in the 2 cent coins. Report this Post to the Staff
bobby131313 Forum Dad United States 24194 Posts	Posted 03/24/2008 12:17 pm Quote: Being the coins are struck multiple times they suffer from this. The thing is... there's no doubling on the rest of the coin. I would think if this was due to the multiple strikes, that it would be on the entire coin. Shop CCF Members on eBay. Report this Post to the Staff
Metalman Pillar of the Community United States 7123 Posts	Posted 03/24/2008 2:07 pm The Machine Doubling on this coin is not caused from the coin being struck multiple times ,,its caused like almost all Machine Doubling ,,from die movement either when the coin is struck or when the die is beginning to move back up from striking the coin . Report this Post to the Staff
bobby131313 Forum Dad United States 24194 Posts	Posted 03/24/2008 2:13 pm Well, that's what I was thinking. So not a true doubled die? Shop CCF Members on eBay. Report this Post to the Staff
Metalman Pillar of the Community United States 7123 Posts	Posted 03/24/2008 2:23 pm Not a doubled die in my opinion. Report this Post to the Staff
foundinrolls Pillar of the Community United States 3507 Posts	Posted 03/24/2008 2:27 pm Not a doubled die....You folks have it figured out pretty well:-) Report this Post to the Staff
	Replies: 7 / Views: 820

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