DENVER, Pa. – Once found at saloons, hotel lobbies and oceanfront boardwalks all across America, antique coin-op machines are quaint reminders of an era when radio, television and video games were still mysteries of the future. For mere pocket change, turn-of-the-century fun-seekers could enjoy an entire afternoon of entertainment. By simply dropping a penny, nickel or quarter into the slot of a coin-operated machine, they could have their fortunes told, watch primitive motion pictures, listen to rhapsodic tunes from a mechanical band, or try their luck at any number of gambling devices or games of chance.