Hammered silver coins underground test.

This is an underground test for small hammered silver coin 10mm. at 8" depth, small hammered silver coin Edward III 18mm. at 12" depth and large silver hammered groat 27mm at 14" depth. The detectors used in this test are Nexus Standard MP fitted with various search coils and Nexus Standard MkII with classic dual 9" coil.
For reference of the ground conditions F75 does GB at 73, CTX3030 does GB at recommended sensitivity level 17. So this ground conditions would be about medium mineral content according to the digital readings.