Catalog Mars MD Blog Treasures of the day… A windy day off Mars Goliath coil for Minelab GPX (DD/Mono) A treasure hunt in the swamp and so much more! Mars Goliath coil for Minelab X-Terra. Photo report A REAL TREASURE! More than 100 silver coins and a ceramic pot!!! MarsMD coils are now also compatible with Golden Mask 5 & Golden Mask 5+! Warranty Period Increased!!!