Coil Pot Pottery pot with lid by Mark Lord, a New Hampshire artist in the early 1970's. Coil pottery is the oldest form of pottery. Coil pottery is made by coiling long ropes of clay in a spiral. The coils are pinched together with hot water and then fired. 12"H Coil Pot Pottery pot with lid by Mark Lord, a New Hampshire artist in the early 1970's. Coil pottery is the oldest form of pottery. Coil pottery is made by coiling long ropes of clay in a spiral. The coils are pinched together with hot water and then fired. 12"H