Well i've had like 10 rolls of 2010 Penny that i kept when i went to a bank on late june and i just left them in the living room sitting there and well today i check them out and i see that the front coins of the rolls got like a oil tone. Why does that happen? Also this is off topic but how much would an average buffalo nickel be worth? 20c? Thanks:smile
1- Coins tone because of many factors -- air pollution, heat, cigarette smoke in your house, etc. 2- There is no such thing as "an average buffalo nickel." Any coin's value is based on its condition and rarity. To know how rare a coin is, one would have to know its date and mint mark, plus any variety it might be. Let me use an example from the Mercury dime set, because that's what I collect. The 1916 dime in AU-58 condition might be worth as much as $15 (I'm guessing, because it's been years since I bought that coin), but the 1916-D in the same condition would be worth upwards of $40,000 because it's more rare and much sought-after. Same year, different mint mark. One is common, the other isn't. Coins that are in worse condition are worth less; whereas, coins in better condition are worth more. The same holds true with any coin series, such as the buffalo nickels you asked about. There are a lot of varieties in that series to take into account, too.
