2007 Washington State Quarter With Bubble

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Author	Replies: 8 / Views: 3,714
Guicho New Member United States 11 Posts	Posted 01/29/2021 02:48 am * Edited by Staff to clarify topic title. Titles are important! * Report this Post to the Staff

John1 Moderator United States 56855 Posts	Posted 01/29/2021 04:50 am to CCF. Looks like a campfire coin,it got tossed into a fire. John1 Report this Post to the Staff
Yokozuna Pillar of the Community United States 4618 Posts	Posted 01/29/2021 06:39 am to the CCF! with john1. The wavy surface is caused by gas bubbles under the clad. The heat was high enough to partially melt the cupronickel layer and expanding gasses did the rest. The weight is a little off, but the major damage nullifies any possible value as it can't be attributed to a mint error and may have been wear on the coin before it was damaged. 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
Guicho New Member United States 11 Posts	Posted 01/29/2021 5:05 pm If the coin was thrown in fire wouldn't the quarter be bent out of shape because it has no curves and it's flat or it would have more than one bubble right? Report this Post to the Staff
Spence Moderator United States 34471 Posts	Posted 01/29/2021 5:11 pm @guicho, this is a bit of speculation on my part, but the difference in thermal coefficient of expansion for the different metal layers seems to cause these bubbles. Sometimes there is only one and sometimes there are multiple. "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Report this Post to the Staff
Guicho New Member United States 11 Posts	Posted 01/29/2021 5:24 pm Ok. I think I get what you're saying. Thank you for replying John1, Yokozuna and Spence. Report this Post to the Staff
merclover Bedrock of the Community United States 10635 Posts	Posted 01/29/2021 7:23 pm So many variables going on. How long may it been heated? And how? blowtorch or campfire? Nobody knows. It is what it is. Report this Post to the Staff
mrwhatisit Pillar of the Community United States 2981 Posts	Posted 01/29/2021 7:32 pm Yeah, somewhere on this site, I have a 1966 dated 'campfire quarter' I found in as a coinstar reject. Edited by mrwhatisit 01/29/2021 7:32 pm Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 01/29/2021 7:34 pm With the different types of metal they don't adjust the same way with the heat: The bubbles on your coin have been flattened, to be able to spend it in a vending machine. Report this Post to the Staff
	Replies: 8 / Views: 3,714

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