State Quarters On Experimental Planchets - Can We Tell From Images?

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Author	Replies: 9 / Views: 4,413
Yokozuna Pillar of the Community United States 4618 Posts	Posted 11/08/2022 5:05 pm Looking through the errors and variety coins in an upcoming Heritage auction I found this coin. It's certified by PCGS as "Stk on Experimental Planchet" Cert. #30000751. The current bid is $1050 ($1260 with Buyer's Premium) with 13 days left in the auction! https://coins.ha.com/itm/errors/199...tions-080216 The description on this lot reads... Quote: 1999-P 25C New Jersey Quarter -- Struck on an Experimental Planchet -- MS68 PCGS. Manganese alloy planchets for the newfangled "golden" dollar apparently arrived at the Philadelphia Mint before their intended target, the Sacagawea dollar dies. Mint workers instead tested the planchets using Statehood Quarter dies. Only a handful of examples are known for each of the five statehood types. The present piece has raised rims, and the peripheral legends are normally struck, without the stretching often encountered on the experimental planchet strikes. The well struck apricot-gold surfaces are immaculate and semiprooflike. The flan is mildly granular throughout E PLURIBUS UNUM, as made. My question is that when a member of CCF post a coin of the correct date and design, how can we tell if it's simply toned or possibly plated from those images? In reading the description above, I understand that the planchets are slightly smaller than the normal quarter so some stretching may be visible. Is the only true test of these coins the metal composition? I know that I will respond with a detailed explanation of what these coins are and how rare they are. I will also note that it may not be possible to say if it IS the experimental planchet or not just from images. Click on the picture for a larger image 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

merclover Bedrock of the Community United States 10635 Posts	Posted 11/08/2022 5:22 pm If a member here presented this to us for examination, my first thought would be that this coin was one of the many State Quarters that were gold plated. Can we tell just from looking at images? I'm thinking no. Report this Post to the Staff
HondoB Bedrock of the Community United States 25509 Posts	Posted 11/08/2022 5:22 pm It would seem that because these were "experimental" strikes, they still belong to the US government. How did they leave the Mint? Inordinately fascinated by bits of metal with strange markings and figures Report this Post to the Staff
MakesNoCentsToMe Valued Member United States 299 Posts	Posted 11/08/2022 5:29 pm I believe that the weight is a good indication. They weigh from 5.9 to 6.3 grams. Edited by MakesNoCentsToMe 11/08/2022 5:32 pm Report this Post to the Staff
halfamind Pillar of the Community United States 1501 Posts	Posted 11/08/2022 6:47 pm From images alone, CCF members could not make an accurate assessment. That happens sometimes here. In this case, you need the back story (and perhaps the coin in hand) to have a chance at being correct. Report this Post to the Staff
Mike Byers New Member United States 16 Posts	Posted 11/08/2022 6:57 pm This was my discovery two decades ago, and was a front page story in several publications. https://mikebyers.com/exp25cset.html Edited by Mike Byers 11/08/2022 6:59 pm Report this Post to the Staff
Yokozuna Pillar of the Community United States 4618 Posts	Posted 11/08/2022 7:27 pm WOW! Great coins Mike, as always! Were these mint authorized strikes or did a mint tech just want to see the State Quarters in with the Golden Dollar color? I think the term Experimental may be a stretch. I figured that if they were done as test strikes the mint would have closely controlled the coins, if only to make sure they were cancelled and or destroyed once they were no longer needed. 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
Mike Byers New Member United States 16 Posts	Posted 11/08/2022 7:50 pm Unfortunately the Treasury letter does not address several of the issues and questions regarding these strikes, leaving it somewhat mysterious. Report this Post to the Staff
Dearborn Moderator United States 97575 Posts	Posted 11/08/2022 9:01 pm Interesting set of coins. 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
MakesNoCentsToMe Valued Member United States 299 Posts	Posted 11/09/2022 4:29 pm @Mike, that's funny because I was just on your website the other day! I had a handful I was going through and weighed them all. Made a note but couldn't remember the website I saw it on. If I had remembered I would have gave your site a shout out. Report this Post to the Staff
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