I have a list of the allowed tolerance for most US coins.
acadien
Posts: 635 ✭✭✭
Small cent 1856 - 1971 was 2 grains +/- .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.
Comments
May I ask the source of these figures?
Yep ... the source of the information is important too.
Thanks for the chart, but, as requested, please post the source.... Cheers, RickO
The numbers seem off. In the first example 2 grains +/- 0.13 grams, 0.13 grams is equal to 2 grains.
I thought for sure this thread title had something to do with worthless 69s and 55 machine doubled pennies. Ha ha ha
Source: U.S. Government (revised 6-1-76)
Small cent 1856 - 1962 was 2 grains. 1962 to...(1982 ?) ... 1.9 grains.
nickels 1866 on....3 grains.
dimes 1.5 grains
quarters 3 grains
Halves 4 grains
silver dollar 1840 - 1971 6 grains then 8 grains
gold dollar, quarter eagle, $3, $4, $5 .25 grains
eagle, double eagle .5 grains
Here the link.
https://www.coincommunity.com/
Here is the link.
https://www.coincommunity.com/
It is listed as " 2 grains OR +/- .13 grams", so yes, they should be equal. I'm not sure why the grams tolerance has +/- and the grains does not.
Here is,
https://www.coincommunity.com/
correction is done
Thanks
@acadien.... Thank you for the link, very good site. Cheers, RickO
Thank you. Here is a list of the U.S. Mint's official weights and tolerances as of Dec. 1, 1947, courtesy of Roger Burdette:
wow, much better.
Thank you
Here are the weight tolerances for all coins as given in the Coinage Act of 1873, by the piece and in quantity. Some of these figures may have been changed before the end of gold coinage in 1933, and the end of silver coinage with the 1964 date.