1977 D Kennedy 40% Half Dollar - Coin Community Forum

To participate in the forum you must log in or register.

Author	Replies: 37 / Views: 4,664	Page: of 3
GR58 Bedrock of the Community United States 11951 Posts	Posted 04/20/2023 11:08 am Any opinions Looks like a 40% half dollar. Weight 11.5g No copper on edge White on tissue test. (Looks better in hand than my pictures show) Report this Post to the Staff

nick10 Pillar of the Community United States 3207 Posts	Posted 04/20/2023 12:01 pm very unlikely to be 40% silver, of course, but to gather more evidence your next step would be XRF testing Report this Post to the Staff
Dearborn Moderator United States 94666 Posts	Posted 04/20/2023 12:40 pm what is the exact weight of this half? 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
GR58 Bedrock of the Community United States 11951 Posts	Posted 04/20/2023 1:10 pm It weighs 11.5g Report this Post to the Staff
Dearborn Moderator United States 94666 Posts	Posted 04/20/2023 1:35 pm Well the weight is 'spot on' for a 40% silver coin at 11.5g, but a clad coin weighs 11.3g so that is still within specs. Is it possible that this one has been plated? 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
GR58 Bedrock of the Community United States 11951 Posts	Posted 04/20/2023 1:48 pm In hand it does not look plated. Taking it to a coin club meeting tonight. I hope I will be able to take it up to Lansing next week to have the metal tested. So far everyone that has seen it in hand thinks it is 40%. Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 04/20/2023 1:57 pm [fingers crossed] John1 Report this Post to the Staff
jbuck Moderator United States 187540 Posts	Posted 04/20/2023 3:25 pm Interesting find. back to the Community! It has been a while! 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
Dearborn Moderator United States 94666 Posts	Posted 04/20/2023 3:30 pm Well I hope it turns out in your favor, can't wait to hear about it after your meeting, Have a look at this: https://coins.ha.com/itm/errors/197...f%20dollars. 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
nfine Pillar of the Community United States 3468 Posts	Posted 04/20/2023 4:20 pm If silver, would you guess the planchet is a left over from 1970 or a wayward planchet from 1976? Report this Post to the Staff
jbuck Moderator United States 187540 Posts	Posted 04/20/2023 4:36 pm Quote: ...a wayward planchet from 1976? Being 1977, I suspect this. A previous discussion for reference... https://www.coincommunity.com/forum...PIC_ID=75353 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
GR58 Bedrock of the Community United States 11951 Posts	Posted 04/20/2023 5:02 pm Thanks for the welcome back Jbuck. I read a Coin World article that said some planchets were sent from San Francisco to Denver in 1977 and some 40% ones must have been mixed in with the copper nickel ones. If this checks out I will send in into NGC. Report this Post to the Staff
nickelsearcher Moderator United States 15384 Posts	Posted 04/20/2023 6:18 pm Looking forward to hearing back on the composition testing . Take a look at my other hobby ... http://www.jk-dk.art Report this Post to the Staff
Dearborn Moderator United States 94666 Posts	Posted 04/20/2023 6:38 pm Quote: I read a Coin World article that said some planchets were sent from San Francisco to Denver in 1977 and some 40% ones must have been mixed in with the copper nickel ones. I put up a link that was from heritage Auctions that sold one a few years ago.. for $6,600.00, the link is just above, if you missed it. 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 04/20/2023 6:56 pm 1971D and 1977D minted on silver blank by mistake 11.5g normal weight for silver, 11.34g for non silver but tolerance needs to be considered. ANACS senior numismatist Michael Fahey said graders relied on the 40 percent silver 1971-D coin's specific gravity in making the silver-copper clad determination. The coin's specific gravity is 9.5, close to the standard 9.53 for silver-copper clad, with a weight of 11.44 grams, within tolerance of the U.S. Mint standard 11.5-gram planchet. Normal specific gravity for copper-nickel clad half is 8.92 and a coin's weight is 11.34 grams. 1977D (11.56g). Error coin dealer Fred Weinberg believes that approximately a dozen examples of the silver-copper clad (40% silver) 1977-D Kennedy half dollars were known to exist before Wildes' discovery: https://www.coinworld.com/news/us-c...ver-planchet 1971-D: https://www.coinworld.com/news/us-c...-silver.html Some info on specific gravity as its not generally discussed much but can be helpful when weight alone does not give all the answers. Most just would send to anacs as mentioned. https://coinsblog.ws/2016/06/detect...gravity.html 1976 S 90% silver put into special sets but might possibly show up in change weight will be 11.5g https://www.PCGS.com/coinfacts/coin...-silver/6728 Edited by datadragon 04/20/2023 10:41 pm Report this Post to the Staff
GR58 Bedrock of the Community United States 11951 Posts	Posted 04/20/2023 10:39 pm Good information Datadragon. thanks ————————— Dearborn . Heritage's auctions are very interesting, I had checked them out yesterday. ——————————- Just to be clear . I understand to not get excited about a coin like this until it has been verified. The coin club meeting tonight was held at a local coin shop. Everyone agreed that it looks like a 40% half dollar. The owner of the coin shop wants me to take it to a big coin shop in Lansing, to have it checked out on their XRF ( I think that is what he said they have ). The plan is we are going there tomorrow morning. Report this Post to the Staff
	Replies: 37 / Views: 4,664	Page: of 3

Last 15 Replies

To participate in the forum you must log in or register.

All Forums Category: US Coins and Currency Forums Forum: US Modern Coins

Silver Gold Bull US is the United States leading bullion dealer. We deliver gold coins, gold bars, silver coins, silver bars and precious metals to your door. Order today!

The First Dollar, your premier source for bullion and rare coins. See our bullion list on the site and the coin inventory on ebay.

View Last 100 New Topics

View Last 100 Active Topics

Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us | Advertise Here | Privacy Policy / Terms of Use

Coin Community Forum

It took 0.47 seconds to rattle this change.