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"The number of pennies in the cup will have a mass of 100 grams. In case you are wondering, the number of pre-1982 pennies has a mass of 3.1 grams. (However, pennies made after 1982 is about 2.5 grams).
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hypertextbook.com/facts/2002/MillicentOkereke.shtml
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I need some help identifying the differences in the 1982 Lincoln penny. Could someone break down the differences in the 4 1982 pennies and the 3 1982D pennies for me? Best I can tell there is a copper/zinc difference and a large date/small date difference.
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boards.collectors-society.com/ubbthreads.php/ubb/showfl...
boards.collectors-society.com/ubbthreads.php/ubb/showflat/Number/1166050/site_id/1
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I have some 1982 pennies but under the slot in the folder this is what it looks like: 1982 1982 1982 1982; Cop. Lg. Dt. Cop. Sm. Dt. Zn. Lg. Dt. Zn. Sm. Dt. Do you know what this means and how I can tell what is what?
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en.allexperts.com/q/Coin-Collecting-2297/1982-pennies.h...
en.allexperts.com/q/Coin-Collecting-2297/1982-pennies.htm
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Q: How can you tell what the large date and the small date on the 1982 pennies are? What the 4 different 1982 pennies? A: The large and small date are pretty easy to tell... ... Q: How can you tell what the large date and the small date on the 1982 pennies are? What the 4 different 1982 pennies?
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coincollector.org/archives/001915.html
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If your Lincoln Memorial penny has a date before 1982, it is made of 95% copper. If the date is 1983 ... For pennies minted in 1982, when both copper and zinc cents were made, the safest and best way to tell their composition is to weigh them. Copper pennies weigh 3.11 grams, whereas the zinc pennies weigh only 2.5 grams.
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coins.about.com/od/uscoins/f/copper_to_zinc.htm
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Taking pennies out of circulation and collecting them is one thing, but paying a premium to buy pre-1982 pennies for their copper value is another, and for most investors, it would be a Stupid Investment of the Week.
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seattletimes.nwsource.com/html/businesstechnology/20038...
seattletimes.nwsource.com/html/businesstechnology/2003810562_stupidinvestment29.html
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The researchers conducted a series of experiments in which they bathed pennies in a solution of stomach acid (hydrochloric acid). Pennies minted before 1982, which are 95 percent copper and 5 percent zinc, showed no erosion.
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www.sciencedaily.com/releases/1998/12/981201033841.htm
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; From: Duke University Medical Center; Children, Pets Who Swallow Post-1982 Pennies At Risk For Stomach Upset, EvenUlcers ... The researchers conducted a series of experiments in which they bathed pennies in a solution of stomach acid (hydrochloric acid). Pennies minted before 1982, which are 95 percent copper and 5...
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www.scienceblog.com/community/older/1998/B/199801128.ht...
www.scienceblog.com/community/older/1998/B/199801128.html
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I would like to know how to tell the diffrence between 1982 penny ; Answer; Michael, there were 8 different types of 1982 cent, taking into account mint mark (none -- Philadelphia; and D -- Denver); large and small date and copper and zinc composition. ... I will answer your questions about encased coins (lucky pennies),
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en.allexperts.com/q/Coin-Collecting-2297/1982-penny-2.h...
en.allexperts.com/q/Coin-Collecting-2297/1982-penny-2.htm
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