I would go with the 1916 era the liberty half dollar today is a very popular coin for it;s design and beauty, that coin alone drew interest to the hobby and it's still widely collected today. The buffallo nickle was another coin that helped the hobby the 1937D three legged nickle drew alot of attention to collectors . and the standing liberty quarters wiith it's beautiful design, and don;t forget the mecury dime with it's errors 1942over the one . I think that was the best time for the mints history for numimatics
Jazzcoins Joe
