Today i was out detecting when the grounds keeper came over to ask what i was finding , I showed him my bucket of zincs,nickles,pencil erasers, can slaw, nail, and foil, he was O.K with me digging i showed him how i keep the trash and digg carfully and know where all the sprinklers are ,, He proceeded to tell me where all the old ball fields were and metioned that he has worked thear for 30 years and when he got hired on one of his jobs at this school was to tear out the old lockers and when he did he was finding handfulls after hand full of silver coins , silver dallors buffalow nickles so it seems he was in the right place at the right time and most of the lost coins got lost behind the old lockers , Now i have been dating everything coming out of this field and all the coins date from early 80s to mid 90s I dont know what detectors came out in late 70sand early 80 but they cleaned house not one silver coin left and all has been accumulating since 1982 but its the rings that I am looking for to tell the truth I do not expect find andy silver coins but some gold rings VERY GOOD POSSIBLILITY