2007 S Proof Washington Quarter - Coin Community Forum

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Author	Replies: 11 / Views: 449
Bill Kerr Valued Member United States 421 Posts	Posted 02/02/2026 2:18 pm Guys, it is my understand that a proof coin is to be without errors, please check out this quarter, your thoughts? Report this Post to the Staff

Errers and Varietys Bedrock of the Community United States 73628 Posts	Posted 02/02/2026 3:13 pm What you're seeing is Machine Doubling. Proof coins are struck more than once, so the chances of Machine Doubling to happen is more likely. Errers and Varietys. Report this Post to the Staff
JDRMCB Pillar of the Community United States 612 Posts	Posted 02/02/2026 4:07 pm Proofs ARE supposed to be perfect, but the QC isn't as stringent as it was before the '80's...when each proof coin was hand inspected before leaving the mint. Report this Post to the Staff
jbuck Moderator United States 187582 Posts	Posted 02/02/2026 4:34 pm Proofs are stuck twice, so doubling seems to be more common than expected. I do not believe it fails QC or else they would have a very high fallout rate. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
Chase007 Pillar of the Community United States 7505 Posts	Posted 02/02/2026 6:32 pm Quote: my understand that a proof coin is to be without errors Well, they are supposed to be of superior quality compared to business strike because as it's been mentioned they are struck twice. And the Machine Doubling has been one of the most common imperfection on Proofs. Report this Post to the Staff
ijn1944 Bedrock of the Community United States 19112 Posts	Posted 02/02/2026 6:44 pm Agree with Chase007... Report this Post to the Staff
Marv65 Bedrock of the Community United States 10478 Posts	Posted 02/02/2026 7:49 pm Quote: it is my understand that a proof coin is to be without errors They are stated to be of high quality but all coins that are struck can have errors or have varieties. It's just that they are farther and fewer in between compared to the Billions of business strikes. EDIT: Random picture from the internet - not my coin! Edited by Marv65 02/02/2026 7:50 pm Report this Post to the Staff
Dearborn Moderator United States 94728 Posts	Posted 02/02/2026 8:33 pm sure looks like MD all over that proof coin. Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin 7070 type set coin count: 51/76 Uncirculated American Silver Eagles My American Silver Eagle Proof Collection Sacagawea Dollars Innovation Dollars Eisenhower-Dollars Kennedy-Half Dollars Washington-Quarters Roosevelt-Dimes Buffalo-Nickels 1938-2005 Jefferson-Nickels Lincoln-Cents Report this Post to the Staff
Bill Kerr Valued Member United States 421 Posts	Posted 02/03/2026 07:41 am Thanks Report this Post to the Staff
JDRMCB Pillar of the Community United States 612 Posts	Posted 02/03/2026 11:48 am Here's a proof nickel from 1971 when QC was more stringent...so mistakes still get out of the mint. Report this Post to the Staff
Brandmeister Pillar of the Community United States 6452 Posts	Posted 02/03/2026 12:19 pm Is it still current minting practice to strike proofs twice? Report this Post to the Staff
jbuck Moderator United States 187582 Posts	Posted 02/03/2026 12:21 pm Quote: Is it still current minting practice to strike proofs twice? Yes. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
	Replies: 11 / Views: 449

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