coin values

Hi everyone,

I'm new here.  My father passed away 20yrs ago and just happend to be going through some stuff I had packed away.  I found a pile of Canadian and American silver dollars.  There's a 1972 John F Kenny half dollar  & 1976 Eisenhower Apollo 11 Moon Landing silver dollar.  Is there anywhere where I can look up these coins to find the value? I also have other US  & Canadian coins that I haven't gone through yet.

Any help would be greaty appreciated!

Darren

 There is NGC website: 

https://www.ngccoin.com/price-guide/world/ 

or on right-hand side of that page is the USA section 

https://www.ngccoin.com/price-guide/united-states/ 

 Maybe go on eBay just to look at the Sold prices, having entered a description.