I suggest you get a good coin book and search for your coin in there.
The most expeditious way to get a coin graded is to locate a coin shop nearby - present the coin to the owner for grading. If he/she is uncomfortable to do so, he/she will refer you to a numismatist (experienced coin collector).
a Coin Toss
If that is a private mint coin, it is probably the weight of the coin.
The coin would float.
Roberto Coin was created in 1977.
The Seventh Coin was created in 1993.
Coin World was created in 1960.
Spinning Coin was created in 1995.
Push for Coin was created in 1995.
Coin - department store - was created in 1926.
Coin's Financial School was created in 1893.
Coin Laundry was created on 2009-04-24.
Guinea - British coin - was created in 1663.
Challenge Coin Association was created in 2006.
Rare Coin Wholesalers was created in 1990.
The Other Side of the Coin was created in 1999.