It's a trick coin made by cutting 2 half dollars down the middle and swapping faces and tails.
If it's really silver it's worth about $5 for the metal content. If it's just copper nickel it has no value because it's a damaged item.
50 cents
A 2002 silver eagle is worth whatever one ounce of silver is worth. At the time of writing, an ounce of silver is worth about $22 and a silver eagle would be worth the same. However, silver fluctuates in price on a minute to minute basis.
What is the Great American Eagle by Gilroy Roberts Worth in Silver
As of 10-21-11 silver is $31.40 per ounce. If the piece is .999 Fine silver the value is about $500.00.
Assuming you mean a Walking Liberty design bullion piece sold by the mint as a "silver eagle", its value will fluctuate with the price of silver. As of 01/2009 a $1 silver eagle retails for $10 to $11.
A 1 pound Silver Eagle is worth about $200.
A 1986P American Silver Eagle in uncirculated condition is worth about $20. If proof 1986S, it is worth about $40.
"Colorized silver eagles" do not exist.
This is NOT an official US Silver Eagle. It's a bullion piece from a private mint made to look like a Silver Eagle. Assuming it's .999 fine silver, as of 10-11-11 silver is $31.79 per ounce and a pound has 16 ounces so... $31.79 X 16 = $508.64
It will be worth the value of silver per ounce. Currently about 30 dollars.
This isn't an official US Silver Eagle, but a bullion piece from a private mint. Assuming it is marked .999 Fine Silver and weighs half a troy pound (or 6 troy ounces), it is worth 6 times the current spot price of silver which is published daily in the financial section of most newspapers. Right now, spot is $17.21, so your piece is worth just over $100. A dealer should buy for at least 90% of that and sell for no more than 110%.
As of 9 May 2013, it's worth $24.
Silver spot price = about $14/oz