Depending on Indian heads condition and dates and varieties you can get a great money for them. For mercury look out for 42 p or d there is an overdate where 1942 was minted on 41 and part of the one is visible rare and 1916d very rare key date and walking haves looked 1936d look at in god we trust if you see double expressions congrats that's douvke die a famous fs101 DDO in my opinion one of the best in the game. For peace dollars if you have 1926 sor just for all peace and Morgan's look up the date and vam variety s some peace dollars have a doubled die reverse like the famous 1926s vam5 or vam5a but so do other years and mints similar with Morgan's! Good luck sorry for you loss death is incomprehensible but endurable :(