Lincoln Memorial Cent / LMC Weight Tolerance Question With Zinc

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Author	Replies: 10 / Views: 4,064
Pete2226 Pillar of the Community United States 3331 Posts	Posted 02/13/2017 4:28 pm I have found one which weighs 2.60 g. Everything else about the coin is normal. What should I know? Report this Post to the Staff

John1 Moderator United States 56855 Posts	Posted 02/13/2017 4:48 pm Mint tolerance is .13 grams +/- John 1 Report this Post to the Staff
Pete2226 Pillar of the Community United States 3331 Posts	Posted 02/13/2017 4:54 pm Quote: Mint tolerance is .13 grams +/- Thanks John1 - where do you find this kind of information? Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 02/13/2017 6:25 pm CCF. John 1 Report this Post to the Staff
Slamnbass Pillar of the Community United States 3644 Posts	Posted 02/13/2017 7:00 pm ..https://www.law.cornell.edu/uscode/text/31/5113 Edited by Slamnbass 02/13/2017 7:06 pm Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 02/13/2017 9:15 pm Here is an image to save this inforation: Report this Post to the Staff
Pete2226 Pillar of the Community United States 3331 Posts	Posted 02/14/2017 05:32 am WOW! Thank you for that! Report this Post to the Staff
pyrbob Rest in Peace United States 1943 Posts	Posted 02/14/2017 07:26 am Weight Tolerances for US coins can be found in the Coin World Almanac. Report this Post to the Staff
cwb Pillar of the Community United States 3463 Posts	Posted 02/14/2017 07:38 am After I read white font on a black background, I am nearly blind afterwards.... I find many Zinc cents that weigh as much as 2.7 grams on my scale. I'm sure there are many cents that weigh even more than that due to thick planchet errors, and most likely a few that weigh considerably less than the required weight. Report this Post to the Staff
Pete2226 Pillar of the Community United States 3331 Posts	Posted 02/14/2017 09:14 am Slamnbass - that is a dynamite tool! Thank you! I found this reference also: H.R.16032 — 93rd Congress (1973-1974) Quote: Specifies the considerations and conditions upon which the Secretary may change the composition of the alloy of the one-cent piece. Report this Post to the Staff
Halo1st Pillar of the Community United States 2775 Posts	Posted 02/14/2017 12:43 pm FYI, I went off the CCF grid looking for any Coin World Almanac references and ran across the following on another coin forum. Posted by Condor101. Sorry no reference to the copper plated zinc era listed after 1982, so assume its still the standard after seeing the other references here on CCF that reference to it. Thanks, Doug. http://www.coinpeople.com/index.php...coin-weight/ Condor101 Posted 09 September 2005 - 01:25 PM I don't know the standards used in other countries, but I have a list of the allowed tolerance for most US coins. Small cent 1856 - 1971 was 2 grains or +/- .13 grams Small cent 1972 - 1982 was 1.9 grains +/- .12 grams nickels 1855 - date 3 grains +/- .19 grams dimes 1.5 grains +/- .09 grams quarters 3 grains +/- .19 grames (notice it is geting stricter. Weight of coin up 2.5 times, tolerance up only 2 times) Halves 4 grains +/- .26 grams (weight up 100% tolerance up 33%) silver dollar 6 grains +/- .39 grams (weight up 100% tolerance up 50% compared to the dime the weight is up ten times, tolerance up four times.) Ike dollar 40% or clad 8 grains +/- .52 grams This is the only clad coin not held to the same standard as the silver versions. Gold coins were held to much stricter tolerances especially as the weight increased. gold dollar .25 grains +/- .02 grams quarter eagle .25 grains +/- .02 grams weight up 150% tolerance up 0% three dollar .25 grains +/- .02 grams still 0% increase in tolerance half eagle .25 grains +/- .02 grams still 0% increase in tolerance eagle .5 grains +/- .04 grains ten times the weight of the gold dollar with only a doubling of the tolerance allowance. Double eagles .5 grains +/- .04 grams Weight doubled again with no increase in tolerance. The information came from the Coin World Almanac 1976 edition. Edited by Halo1st 02/14/2017 12:50 pm Report this Post to the Staff
	Replies: 10 / Views: 4,064

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