My boyfriend has the first issue of Superman dated 1938 with the green car on the front ..... his father left it to him , it is in mint condition kept in those protective sleeves since he was young ... we were in total shock when we saw the suggested value here !!! I mean we knew he had it but had no idea the worth !!!... as well his father left him the entire Silver Surfer Collection... any idea where we can find out what that is worth?