I hit a sand volleyball court in the area at first light this morning. I was running the Core in 3 tone, sensitivity at 90 and mask at 21 and using the 11x7 coil. Had a total of 4 hits out of the 3 courts. 1 large tack, a wood screw, soft drink foil top and this rascal. It came in at 88-89. I found one very similar on Etsy. They run from $50 plus up to $2000 depending on the metal. The only markings inside are an engraved date and a super small stamp that looks like a hand. Not sure the type of metal but it is heavy. The outside has a wood grain look that carries on to some of the inside of inside of the band.

Minelab Equinox 800, Nokta Fors Core, Garrett Carrot