Machine Doubling, Series Doubling - Coin Community Forum

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Author	Replies: 5 / Views: 514
kelmarie27 New Member United States 5 Posts	Posted 07/11/2023 4:28 pm I do not understand SDO MMD . Does series doubling mean that all the coins have it? Report this Post to the Staff

-makecents- Pillar of the Community United States 8744 Posts	Posted 07/11/2023 4:38 pm I am not familiar with the term "series doubling" but there are cases where there is channeling, which looks like doubling and can cross multiple years. LINK https://www.error-ref.com/retouchin...gn-elements/ -makecents- Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 07/11/2023 5:36 pm Could you clarify your question please. John1 Report this Post to the Staff
Dearborn Moderator United States 95740 Posts	Posted 07/11/2023 6:54 pm what is 'series doubling'? maybe if you posted a picture first. 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
Cujohn Pillar of the Community United States 7174 Posts	Posted 07/11/2023 7:33 pm to the CCF and Report this Post to the Staff
kelmarie27 New Member United States 5 Posts	Posted 07/12/2023 2:55 pm Thank You ... I am referring to a Kennady 1972d half dollar.... there was a reply to someone else's post that said theirs wasnt a DDO-001. .I AM almost sure they said SDO-001 OR MMD-001. I was trying to see what that means. Report this Post to the Staff
	Replies: 5 / Views: 514

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