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 Replies: 7 / Views: 5,356 |
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New Member
United States
19 Posts |
I bought a digital scale today to weigh my pennies. I calibrated it and it passed the calibration test, but all the coins I have weighed are registering 2.1 grams, 1983, 1990, 2020. The 1942, 1960, and 1969 pennies weighed in at 2.6 grams. Well over twenty pennies and the Quarters are 4.9 grams. I'm trying to figure out how this is possible. Does anyone have another idea for this, other than an underweight Planchet? Edited by Lsea789
08/17/2020 5:01 pm
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Moderator
 United States
189603 Posts |
 to the Community! |
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Pillar of the Community
United States
5240 Posts |
it sounds as if your calibration on the scales is wrong to have that many Lincoln cents from different years be that much off. |
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Bedrock of the Community
United States
10635 Posts |
Sounds like your scale needs calibration. Halfway through 1982, the mints switched from copper cored cents to zinc cored cents. So, in general, pre-1982 cents should weigh 3.11 grams, while post 1982 and newer cents should weigh 2.5 grams. Mint Weight Tolerance should be (by law) + or - 10%. Of course, well-worn cents could weigh less than mint tolerances. Calibrate your scale using new cents {any after 1982), as I mentioned, they should weigh 2.5 grams, then verify your calibration using a newer looking (non-worn down) pre-1982 cents. to the CCF! Hope this helps!  |
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Moderator
United States
56855 Posts |
to CCF. Copper U.S. Lincoln cents weigh 3.1 grams until the year 1982 when copper plated cents started. The copper plated cents are 2.5 grams. The mint tolerance is +/- .13 on the copper and +/- .10 on the copper plated ones. You also need to factor in wear on the coins. If you think your scale is accurate,you may want to buy a different brand of scale and see what happens. John1  |
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Pillar of the Community
United States
5786 Posts |
 Merclover spells it very well. Let us know how the re-calibration turns out. Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Pillar of the Community
United States
2404 Posts |
and With all especially Jim0815. Sorry. |
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New Member
 United States
19 Posts |
Thank you all so much! I am in the process of getting another scale and an actual calibration weight set. I think that will definitely be a great help.
Thanks again and I am very glad to be apart of the coin community!
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Replies: 7 / Views: 5,356 |
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Posted 08/17/2020 4:56 pm
