1979 Quarter - Copper Obverse Missing Clad Layer - Bonding Error

To participate in the forum you must log in or register.

Author	Replies: 7 / Views: 4,251
Yokozuna Pillar of the Community United States 4618 Posts	Posted 10/14/2019 9:37 pm A nice example of a bonding error. One clad layer on the planchet separated before it was struck. This coin happened to have the copper layer exposed on the obverse when struck. The coin weighs 4.67 grams, or about 85% of a normal quarter's weight of 5.67 grams. The details of the coin are weak on both sides due to the missing metal mass in the coining chamber. The definition of this error from Error-Ref.com Quote: One clad strip was not properly bonded to the core strip by the bonding mill. This caused the clad layer to separate from the copper core after blanking but before the coin was struck. I also have a 1999-P Dime with the same error. ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! Edited by Yokozuna 10/14/2019 9:38 pm Report this Post to the Staff

Greasy Fingers Pillar of the Community United States 7063 Posts	Posted 10/14/2019 10:03 pm For my education could you show me a shot of the edge (redding) obverse side up? Ple ASE Report this Post to the Staff
fortcollins Pillar of the Community United States 3663 Posts	Posted 10/14/2019 10:19 pm Great coin! The strike looks pretty good for a significantly underweight planchet. Your coin has nice eye appeal. Report this Post to the Staff
Yokozuna Pillar of the Community United States 4618 Posts	Posted 10/14/2019 11:28 pm Here's a shot of the edge. It's almost all copper with only a little of the clad layer showing. ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! Report this Post to the Staff
Greasy Fingers Pillar of the Community United States 7063 Posts	Posted 10/14/2019 11:35 pm Very nice...Thank you Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 10/15/2019 01:00 am What does the edge tell me? That the stock material was cut with the obverse side up (the side with the missing cladding) How do I know this? The copper color is longer from the top. If it had been cut from the opposite side, the silver color on the edge would show a longer silver color. Note on these quarters: The longer gray edge is cut from that top/bottom of the planchet. Thinner gray color is the bottom of the cut. Report this Post to the Staff
Yokozuna Pillar of the Community United States 4618 Posts	Posted 10/15/2019 01:05 am I see what you mean. Thanks Coop! ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 10/15/2019 1:41 pm Quote: Here's a shot of the edge. It's almost all copper with only a little of the clad layer showing. What it tells me is that the clad layer that came off was the layer on the bottom side of the strip as it went through the blanking press. And as Coop points out that side was facing the obv die when it was struck. Report this Post to the Staff
	Replies: 7 / Views: 4,251

To participate in the forum you must log in or register.

All Forums Category: US Coins and Currency Forums Forum: US Modern Variety and Error Coins

Silver Gold Bull US is the United States leading bullion dealer. We deliver gold coins, gold bars, silver coins, silver bars and precious metals to your door. Order today!

The First Dollar, your premier source for bullion and rare coins. See our bullion list on the site and the coin inventory on ebay.

View Last 100 New Topics

View Last 100 Active Topics

Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us | Advertise Here | Privacy Policy / Terms of Use

Coin Community Forum

It took 0.27 seconds to rattle this change.