Four of these were found the slope between low and high tide. The blue and black tungsten ring had target ID of 16 -17 with an iron grunt that sounded like a rusted crown top. I started to leave it. Took a few steps and went back to dig it. Learned my lesson. Also a batman tungsten ring, a silver ring, lady of Guadeloupe ring 417, gold plated childs ring, another junk ring, coins, some type of bottom, and the usual junk finds. Had a great day. Was using the Equinox 800.