Help With Identification / Where To Go For Value

First off to our sight. As for your set they are not issued by the US mint and at best are copies of US coins. As for collect-ability they are probably not much more valuable that the silver content as the electroplating of gold is negligible. They are probably a fun novelty set can you post any photos?

What is the design on the other side of each medal? Yes, these are medals and not coins.

As muddler stated, these are not US Mint commemoratives, they were struck by a private mint.

I found a reference for a set with the same design indicating that each medal weighs "one pound" but it didn't specify if the weight was measured using the troy or avoirdupois system. If troy, the medals include 12 ounces of fine silver, if avoirdupois they should contain 16 ounces.

I agree with muddler regarding the value of the medals, they would most often sell for their silver melt value or just slightly above. A collector with a specific, strong interest in the set may pay a bit more.

It's an attractive set!

Was the "25 KT" reference in your original post a typo? Should it have been "24 KT"? 24 karat gold is considered pure gold - I've seen the use of 25 KT but it generally seemed more of a marketing ploy than anything else.