OLD COIN. Origin and date please ? thank you.?
147505
All I can find is that it is a Canadian coin.
638955
It is the year that quarter was minted, or made. You will notice a year like that on every coin and dollar bill. I think it is pretty cool when I find really old pennies.
1181964
Have it appraised first and foremost.  Take it to a local coin dealer (yellow pages or on-line search) and ask their opinion.  Then I agree, sell on EBay but you will know your reserve.
452849
You need a Numismatist. Here is a link. You will need to have it inspected. Usually you can check your yellow pages and find someone qualified.
516072
What kind of condition are they in? Well, actually, either way, some might be. I know there are some pretty expensive collections with similar coins as the only pieces. It depends on how used they are and where they were minted (made), deleware/pennsylvania/san fransisco.
274927
There are alot of in the know people about that sort of thing on the currency tracking website www.wheresgeorge.com\n\nJust ask on one of the collecting forums.
113666
You can type in a good description of the coin, it's likely that someone out there has another one just like it.  Otherwise, take it to a coin shop.
718836
Which coin?  A U.S. coin?  Or a foriegn coin?
375483
Go on ebay and type the year and denomination of the bill\n\nthat will give you some kind of an idea.
194984
Definetly check your local coin dealer or just pick one up on Ebay.
48132
Don't do that.  Sell it to a coin dealer, it is worth much more than the face value on the money.  For quick check, use eBay.
794487
Here is a link to one presently being offered on eBay, with photo:\n\nhttp://cgi.ebay.com/1988-50-PESOS-MEXICO-WITH-REEDED-EDGE-IN-MS-COND_W0QQitemZ200049022384QQihZ010QQcategoryZ541QQrdZ1QQcmdZViewItem?hash=item200049022384\n\nFace value is zero. This coin has been demonetised. Collector value is $1 or less (Yes, I think this fellow has his coin priced a touch high)
1076085
I am a private collector of  ancient coins, send me a picture of both sides of the coin or place it on e-bay.
469723
The 1990 $100 is only worth $100 but the penny should be worth a lot. Go to a coin dealer and have it appraised
1098433
There are tons of pawn shops and antique stores that specialize in coins.  Just look up Coin shops in the phone book.
23126
It depends on many things, such as what condition it is in, the grade, where it was minted, and stuff like that. I can't remember what it is, but there are websites that can help you find that info. Try doing a search for it.
858362
if you own a penny dated 2009 it could be a forgery-- then again it could be a defective die being used during the press cycle of both the obverse and reverse strike to the coin-- mint errors are in good demand and you should have it authenticated thru p.c.g.s. or a grading service to see if it is in deed an error--if it is authentic and a mint error it could be worth quite alot of money.i heard a few years back where a susan b anthony was found on a quarter planchet-- it was sold for several thousand dollars on an auction website-- the mint does make errors and cannot retrieve some coins sent into circulation because the person watching missed it-- you indeed have a coin thats interesting for sure-- if its real-- you may have a penny that will buy you a new car or something else-- go to a reliable coin dealer and have it checked out-- or have it authenticated thru the previous mentioned services-- good luck