1999 D Gold Connecticut Quarter Experimental Planchet Error

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Author	Replies: 28 / Views: 6,672	Page: of 2
Bobby1980 New Member United States 3 Posts	Posted 06/03/2023 11:31 pm This is a gold 1999 D Connecticut State Quarter it doesn't appear to be worn very much it does not have a copper line on the Edge and it doesn't have any color discoloration in the weight of the coin is 5.9 Grams Report this Post to the Staff

datadragon Pillar of the Community United States 1648 Posts	Posted 06/03/2023 11:43 pm There are four known types of experimental compositions which have been discovered so far on 1999 State Quarters. Please add a photo of the edge, and the size compared to another 1999. Type #1 - This type has the "color" of a Sacagawea dollar and has the copper center core. Type #2 - This type has the "color" of the Sacagawea dollar but does not have the copper center core. Type #3 - This type has a slight "green" color and has the copper center core. Type #4 - This type has a slight "green" color but does not have the copper center core. WEIGHT - The weight on ALL of these discovered so far is OVERWEIGHT - varying from 5.9 grams to 6.3 grams. (another said 6.61g) SIZE - It is slightly THICKER than a regular State Quarter, due to the heavier planchet. COLOR - So far, the pieces discovered are either the same "color" of the Sacagawea dollar, or have a slight "green hue" to them. LOOK - The edge is slightly rough and may have a higher rim around part of the edge. EDGE - Some of these do NOT have the center COPPER CORE. STRIKE - None discovered so far are proof-like in the fields. REEDING - Some of these have incomplete reeding. If it passes the tests vs being plated which also happened during that time then testing the alloy and getting certified would be next. The predominant metal is copper, followed by zinc. There are also small percentages of manganese and nickel. 1- https://mikebyers.com/exp25cset.html 2- https://www.error-ref.com/sate_quar...ental_alloy/ Edited by datadragon 06/04/2023 12:26 pm Report this Post to the Staff
nfine Pillar of the Community United States 3468 Posts	Posted 06/04/2023 12:36 am Much more likely to just be a gold plated quarter. They were sold in massive amounts in every magazine and on every home shopping channel. Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 06/04/2023 05:39 am Could use better photos,but I am thinking it was gold plated after it left the U.S. mint or just toned a golden hue. John1 Report this Post to the Staff
nickelsearcher Moderator United States 15396 Posts	Posted 06/04/2023 06:22 am to the CCF Take a look at my other hobby ... http://www.jk-dk.art Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 06/04/2023 09:20 am Most likely plated, agree. to the CCF! Report this Post to the Staff
oddguy Pillar of the Community United States 4135 Posts	Posted 06/04/2023 09:35 am I agree with it being plated. Has no extra value now, but cool find anyway and it is a good example to show. Report this Post to the Staff
Dearborn Moderator United States 95088 Posts	Posted 06/04/2023 09:40 am Nice information David! never knew there were 4 types here. we need much better images and one showing the edge. Also include a size comparison with a 'normal' quarter too please. 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
Petespockets55 Pillar of the Community United States 5770 Posts	Posted 06/04/2023 11:13 am I'm with Dearborn (especially after looking over Datadragons info). I didn't realize there were composition anomalies for the year. Another possible test might be an XRF scan to determine the metallic content of the quarter. (I have a pawn shop do my questionable coins or metal detecting finds.) Words of encouragement are one of the major food groups. We need to consume them regularly to thrive and grow. Report this Post to the Staff
Bobby1980 New Member United States 3 Posts	Posted 06/04/2023 3:24 pm Report this Post to the Staff
nss-52 Moderator United States 54280 Posts	Posted 06/04/2023 3:56 pm A gold plated clad quarter would have gold edges. Show your financial support of the Coin Community Family (click here) See my topic on Mexican Numismatic Medals (click here) Report this Post to the Staff
Dearborn Moderator United States 95088 Posts	Posted 06/04/2023 5:14 pm I agree that chances are that this is a simple plated coin, but David did bring in a tiny bit of doubt. an easy test would be to give this coin a VERY TINY scratch in between one of the reeds to see if there is a copper nickel clad over a copper core. 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
datadragon Pillar of the Community United States 1648 Posts	Posted 06/04/2023 5:38 pm The experimental planchets are rare so yes we wouldnt see one posted much at all if ever. Gold plated sets are made and sold by the thousands or tens of thousands so yes of course typically the default is that unless it checks out. All discovered experimental ones so far have been 5.9g or above in weight but in this case since it was within that range I couldnt eliminate it by that nor having the same size it looks like as usual. The photos were not optimal since the color appears more gold like which is more in line with plated quarters while the manganese brass is more yellow, looks more like the Sacagawea dollar coins the mint strikes as compared below. They also can have a slight "green hue" to them. So far I'm going with plated. If you really want to be sure, take it to a coin shop or pawn shop that has a handheld XRF gun since a coin that is a real experimental one is worth potentially $10k+. It can be sent in for grading/authentication or can try what Dearborn already mentioned but that may risk damage to coin if it turned out unlikely to be an experimental one. You can also contact mike byers for his opinion since it has a potential weight within the known range and apparently size appears thicker. 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. Edited by datadragon 06/04/2023 5:48 pm Report this Post to the Staff
Cujohn Pillar of the Community United States 7174 Posts	Posted 06/04/2023 6:09 pm to the CCF and Need more info. I didn't realize there were that many off metals, I'm hoping for a good outcome. Report this Post to the Staff
Dearborn Moderator United States 95088 Posts	Posted 06/04/2023 6:14 pm Quote: I'm hoping for a good outcome. Yep! me too.. 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
macmercury Pillar of the Community United States 5823 Posts	Posted 06/04/2023 7:18 pm From Mike Byers special volume 2... Report this Post to the Staff
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