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Pillar of the Community
United States
3331 Posts |
James Wiles states: "1991 - The U.S. Mint began punching the mintmark into the master die for the dime, quarter, and half dollar denominations. The last year possible for an RPM on a business strike dime, quarter or half is 1990" http://www.varietyvista.com/Watersh...h9hBBntxBjHU br / I asked him for the source of his information. He said that it was in all the numismatic publications at the time. Information came from the Mint. He suggests looking in back issues of the Numismatist, Coin World, etc. I do not have copies of any issues for 1989/1990/1991. I wonder if anyone would be interested in checking their library? I know all other sources that I am aware of claim that RPMs are not possible after 1989. |
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Pillar of the Community
 United States
3331 Posts |
I have been researching this and here is what I have found so far: Mint Marks on Master Die (Revised) "Elimination of Hand Punched Mint Marks on the Working Die. In FY90, the Mint completed a change within the die marking method with the mint mark on obverse work dies. Work dies requiring a mint mark were stamped manually in the past. Using the new method starting in FY91 {October 1 1991 begins the FY91}, the mint marks will be placed on the master die ensuring uniformity of mint marking on all circulating coins." From Page 25, Annual Report of the Director of The United States Mint, Fiscal Year 1990, Donna Pope, Director of the Mint https://books.google.com/books?id=3...mint&f=falseA member of Coin Talk reports: "The Sixth and Seventh editions of the Coin World Almanac report this change in their "Review of the News" sections for 1990 and 1991, respectively. In the Sixth Edition, it states for 1990 that: April 4 ...the United States Mint plans to eliminate the practice of placing Mint marks on each individual working die by hand over the next several years, and has already done so for 1990 cents and 5-cent coins. Mint marks will be added at the master die stage. On page 324, under the U.S. Coins - Mint Marks section, it also claims that the mint mark for all proof and commemoratives would be added at the plasticene model stage of die production. And that the procedure would be phased in for circulation coinage. In the Seventh Edition, it states for 1991 that: Mint officials in 1990 decided to end the practice of punching Mint marks into working dies by placing the Mint mark onto the master die. The switch was made to cents and 5-cent coins in 1990, with the remaining denominations following in 1991. So, according to Coin World, RPMs for cents and nickels shouldn't be possible after 1989, and for all other denominations after 1990." https://www.cointalk.com/threads/ne...post-3942976 |
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Pillar of the Community
United States
715 Posts |
Thanks for doing this research and sharing the info. Interesting information.
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Pillar of the Community
United States
3331 Posts |
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Bedrock of the Community
United States
17884 Posts |
Frankly the mint report still leaves some confusion. It states that the change was completed in FY 1990. Then it says that in FY 1991 all the mintmarks would be on the design hub. FY 1990 ended June 30, 1990. This would seem to indicate that some of the 1990 dated coins (those from the first half of the year) would have been done with hand punched mintmarks, and thse in the last half of the year with design hub mint marks.
Also from what I recall the change was phased in over a couple year period with the cents being the last ones to switch over in 1990. I'd like to know what the 1989 annual report says but I don't have a copy of it, and I can't find one online. (I have most of the annual reports but I'm missing 1980 to 89.)
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Pillar of the Community
United States
3331 Posts |
I think FY91 would cover October 1, 1990 through September 30, 1991. I mistated initially
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Valued Member
United States
303 Posts |
Thanks for the write up. Good information to know.
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Pillar of the Community
United States
3331 Posts |
You are welcome, heavymetal.
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Pillar of the Community
 United States
5792 Posts |
Very interesting thread because I thought I came across an RPM from 1990 this year but told myself, "not possible".
I kept it and will have to see if I can put my hands on it, post it and get feedback.
Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Pillar of the Community
United States
3331 Posts |
Quote:
Very interesting thread because I thought I came across an RPM from 1990 this year but told myself, "not possible".
I kept it and will have to see if I can put my hands on it, post it and get feedback. I hope you can find it! Anxious to see it! |
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Bedrock of the Community
United States
62064 Posts |
The mintmark can be doubled on post 1990 coins, but they would be part of a doubled die. _AAB.jpg) But if the mintmark is the only thing affected, it is probably not a doubled die, but a different issue. (often machine doubling/die deterioration) But the other devices would need to be doubled also. |
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Pillar of the Community
United States
5792 Posts |
Found it. It appears to be an MDS/LDS. Even though it has some plating issues, I haven't found LM cents with plating issues on the devices. I've only seen it in the fields around the devices. If it is an RPM it isn't a conventional one. It almost looks like the secondary may have been caused by a MM punch that was tilted, making the upper part of the D sink deeper into the surface of the die. I think Jason Cuvalier describe a similar scenario for a type of offset doubling if I remember correctly. He suggested the face of the working hub could be tilted (not parallel) in relation to the working die face that was receiving the second hubbing. Anyway, here are some images I took. Let me know if anyone would like more or if this is my imagination running amok? First image is a drawing I made as I see the MM. Pink is the primary MM and Green is the raised area of the secondary MM. Thanks for any help on this one. PP55            Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Pillar of the Community
United States
1590 Posts |
Condor is right, the Mint uses there own FY, which is from July 1st to June 31st. Not the federal FY.
Thus FY 91 would begin July 1st 1991.
Now, note that the Mint being thrifty would use up all dies it already had in store before moving on to the new style dies, which in all probability means that some were still in use in FY 91.
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Pillar of the Community
United States
3331 Posts |
Quote:
Condor is right, the Mint uses there own FY, which is from July 1st to June 31st. Not the federal FY.
Thus FY 91 would begin July 1st 1991.
Now, note that the Mint being thrifty would use up all dies it already had in store before moving on to the new style dies, which in all probability means that some were still in use in FY 91. Thanks for correcting! |
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Pillar of the Community
United States
5792 Posts |
Quote:
I hope you can find it! Anxious to see it! Anyone have any thoughts on the images I posted? Curious to hear if it might be an RPM or other. Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
Edited by Petespockets55
12/24/2019 06:10 am
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Pillar of the Community
United States
3331 Posts |
Your coin looks interesting. If it had split serifs, that would nail it. I, too, would like to hear from someone confident in their assessment.
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Replies: 17 / Views: 3,088 |
Posted 12/18/2019 2:11 pm
