Coins Year

I have a ton of these coins. They are Greenpeace coins from1986. They are for the 1st year of the whaling ban?

On the back is Hawaii 10th anniversary. it is silver and is one troy once. and its from the international whaling commission. anybody have any ideas on how much it could be worth?

They are commonly referred to as silver rounds, and their value is based upon the spot price of one troy ounce of silver currently $14.25US.

Rare 2200-Year-Old Gold Coin Found in Israel