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Can someone help me with some coin math?

ddbirdddbird Posts: 3,168 ✭✭✭
How many oz. in 1 cent (pre 1982)

Just trying to figure out if its worth it to start hoardin.

Thanks

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    coinman420coinman420 Posts: 4,666
    aproximately 144 pennies to a pound i beleive, anybody correct me if i`m wrong
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    ddbirdddbird Posts: 3,168 ✭✭✭
    Thanks...

    What is that roughly .1 oz copper in each cent?

    Or where you talking abotu a troy pound?
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    ILikeMercsILikeMercs Posts: 1,392
    redbook says 3.11 grams...so approximately 8 pennies to an oz?.........
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    coinman420coinman420 Posts: 4,666
    my math gives me 9 lincolns per oz. not troy. again, if anybody can add to this it may help.
    my ebay items BST transactions/swaps/giveaways with: Tiny, raycyca,mrpaseo, Dollar2007,Whatafind, Boom, packers88, DBSTrader2, 19Lyds, Mar327, pontiacinf, ElmerFusterpuck.
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    ILikeMercsILikeMercs Posts: 1,392
    .950 copper in each cent
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    coppercoinscoppercoins Posts: 6,084 ✭✭✭
    Generally 147 to 148 wheats to a pound. Divide by 16 for the number per ounce...just over 9.
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    mrcommemmrcommem Posts: 1,156 ✭✭✭✭
    There are 31.1 grams to a troy ounce and 12 ounces to a troy pound. Therefore there are 373.2 grams to a troy pound. Divide by 3.11 and there are 120 cents in a pound. In a avodupois pound there are 145 5/8 cents. Troy weight is used in metals so there are 120 cents to a pound and 10 cents to an ounce.
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    mrcommemmrcommem Posts: 1,156 ✭✭✭✭
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    au58au58 Posts: 1,288 ✭✭✭
    By Paul van Eeded from the Kitco web site:

    Hoarding Pennies

    By Paul van Eeden
    May 81, 2006

    www.paulvaneeden.com



    With the rising price of copper there has been a buzz lately that the time may be ripe for hoarding copper pennies. To wit, the price of copper has risen from $0.60 to $3.50 (almost 500%) in less than five years and from $1.50 to $3.50 (133%) in barely more than one year. It is understandable that people are starting to think about hoarding pennies; but it is also complete folly.

    The problem is that there is very little copper in a US penny. Since 1982 the US penny is made of copper plated zinc; its composition is 97.5% zinc and 2.5% copper. A modern penny weighs 2.5 grams, which means it contains 2.4375 grams of zinc and 0.0625 grams of copper. At current metal prices of $3.50 per pound of copper and $1.55 per pound of zinc, the US penny contains 0.0482 pennies’ worth of copper and 0.806 pennies’ worth of zinc for a total contained metal value of $0.008542. As you can see, the metal value of a penny is still less than a penny. You didn’t really think the government would mint coins at a loss, did you?

    Now, the situation is very different for pre 1982 pennies. Pennies minted between 1793 and 1837 were made of pure copper. In 1837 the penny was debased and for the next twenty years was made of bronze (95% copper and 5% tin and zinc). In 1857 it was debased again to 88% copper and 12% nickel, giving it a whitish appearance; and then from 1864 to 1962 it was once again made of 95% copper and 5% tin and zinc. The exception was 1943 when the penny was made of zinc-coated steel due to the critical use of copper for the War Effort. In 1962 the small amount of tin was removed from the penny and its composition -- until 1982 -- was 95% copper and 5% zinc. So if you can lay your hands on pennies minted between 1864 and 1982, you could make a penny.

    Pennies minted during those years -- with the exception of the 1943 steel penny -- contained 95% copper and weighed 3.1 grams. Thus, each of those pennies contained 2.945 grams of copper. At $3.50 per pound, each penny therefore contained $0.0227 worth of copper; more than twice the face value of the coin. Assuming you can get a smelter to pay you 90% of the metal value of the copper in a penny, it means you can get two pennies worth of copper out of each pre-1982 penny.

    So, if each pre-1982 penny contains two pennies worth of copper you could make a penny profit for each penny you smelted. But how practical is that? To make $10,000 in profit you would need to smelt one million pennies, and one million pennies weigh 3.1 metric tonnes, or 3.4 US tons. To store and transport that many pennies to a smelter would most likely cost you more than $10,000; and that is assuming you could lay your hands on a million pre-1982 pennies.

    The average lifespan of a coin is about thirty years, so by now most of the pre-1982 pennies have long since been reused by the US Mint to make new copper-plated zinc pennies. If you can find a pre-1982 penny it would make a neat conversation piece but I am afraid that as a money-making scheme, trying to hoard pennies is about as lame as hoarding paper dollars.


    Paul van Eeden



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    WeissWeiss Posts: 9,936 ✭✭✭✭✭
    Oh man, I hadn't even considered that. The general public is going to catch wind of the value of pre-1982s, but they're not going to understand the difference. So they're going to start hoarding ALL pennies image
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    My dad has been getting $50 cent bags from the bank and going through them for about 6 months now.

    If copper keeps going up,he'll be able to fully retire.
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    Conder101Conder101 Posts: 10,536


    << <i>There are 31.1 grams to a troy ounce and 12 ounces to a troy pound. Therefore there are 373.2 grams to a troy pound. Divide by 3.11 and there are 120 cents in a pound. In a avodupois pound there are 145 5/8 cents. Troy weight is used in metals so there are 120 cents to a pound and 10 cents to an ounce. >>


    Precious metals, gold, silver, platinum group, are measured in troy weights. Base metals are measured in AVDP units.
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    FrankcoinsFrankcoins Posts: 4,569 ✭✭✭


    << <i>There are 31.1 grams to a troy ounce and 12 ounces to a troy pound. Therefore there are 373.2 grams to a troy pound. Divide by 3.11 and there are 120 cents in a pound. In a avodupois pound there are 145 5/8 cents. Troy weight is used in metals so there are 120 cents to a pound and 10 cents to an ounce. >>



    Troy weight is used only for precious metals
    Frank Provasek - PCGS Authorized Dealer, Life Member ANA, Member TNA. www.frankcoins.com
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    GTOsterGTOster Posts: 861 ✭✭✭
    Here is the break down for weight

    24 Grains= 1 pennyweight

    20 penyweight= 1 troy oz.

    480 grains= 1 troy oz.

    12 troy oz's. = 1 troy pound

    1 troy oz. = 31.104GRAMS

    1 pennyweight = 1.5552 GRAMS
    Hope it helps
    Paul
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    Conder101Conder101 Posts: 10,536
    Doesn't help all that much when you're dealing with copper.

    For copper and other base metals

    1 pound = 16 oz = 453.5 grams

    1 oz = 28.344 grams
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    segojasegoja Posts: 6,120 ✭✭✭✭
    It'll just be coffee cans full of Memorial cents.....just like 20-30 years ago people haorded wheat cents.

    The article says it well.....toooooooo much trouble to make a few cents, but people will try it...just watch
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    Another side effect.......Wheat cents no matter how common, will start to rise in price. FINALLY.
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    Heck, pre-1982 cents should rise! image

    I've noticed at a recent coin club meeting, common junk silver is no longer being offered... maybe the thought is "why sell, when it will be worth more tomorrow?".

    I'm kind of wondering if this is really a bubble now... maybe prices for various metals was just too low in past years...
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    Conder101Conder101 Posts: 10,536


    << <i>The article says it well.....toooooooo much trouble to make a few cents, but people will try it...just watch >>


    They said the same thing about the foolish people hoarding silver coins back in the early 1960's.
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    Is copper traded by the troy oz?

    I have a gallon jug of pennies that weighs 37 lbs avdp. I figure it has about $54 face in it.
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    BlindedByEgoBlindedByEgo Posts: 10,754 ✭✭✭✭✭


    << <i>

    << <i>The article says it well.....toooooooo much trouble to make a few cents, but people will try it...just watch >>


    They said the same thing about the foolish people hoarding silver coins back in the early 1960's. >>



    Cost of living has gone up only 500% or so since then... Now that 90% silver is finally over 5X face, they are in the money!

    At today's 10X face, the people who hoarded pre-64 coins (at face) have doubled their money (after inflation). I estimate that to have gotten the same return on compound interest since 1965, they would have had to average about 6% interest, compounded annually, with full reinvestment of interest income, tax deferred.

    Just food for thought.
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    FullStrikeFullStrike Posts: 4,353 ✭✭✭
    Which would get me money the quickest? Hoarding copper cents, scrounging aluminum cans, getting a part time job? I doubt there would be much profit in hoarding pennies.image
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    MadMartyMadMarty Posts: 16,697 ✭✭✭
    Whenever the cent bag in the coin counter gets full at the bank they call me to pick it up. So I get $50 worth of lincolns at face, I'm still sorting them (that is the PITA part of this) and putting the pre 82s in coffee cans. When the can gets full I'm going to haul it to the scrap yard and see what I get!
    It is not exactly cheating, I prefer to consider it creative problem solving!!!

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