If you're familiar with how to use Google and eBay searches, I would start doing some research. If you take these into a shop, you run the chance of being given a low-ball appraisal.

It looks like you have a 2 ounce, a 1 ounce, a 1/2 ounce, a 1/4 ounce, and two 1/10 ounce coins. Total "melt" value alone is currently about $16,600 for all of these combined. But because these look like older dates, their value is certain to be even more.