Used the Ace 251 for a couple hours until my batteries were charged on the ATPRO this morning. It was non stop digging from daylight this morning until I just quit.In my pictures I think theres a latch to an old Ice box. Looks like2 very old thermostats for some kind of motors, has 3 patent dates, last patent was "1935." one 1945 D Merc dime , 7 wheats, couple dollars in change. Ive never dug this much brass and copper in one hunt. If the price of copper and brass keeps rising, I just might quit my job. From the florida gulf coast thanks for lookinng