The Makro racer finds my favorite wheats, a 1944 and a 1945 which were made from recycled artillery shells from the war with some other wheat and a non wheats. That dorito looking triangle thing was 16.5 "deep, a non id signal, I had to dig it because it was repeatable. I marked the shovel to get a depth reading, impressed with its depth. Respectable depth for the Makro racer, although it turned out to be junk.