It is brass. It was dug in NC beside the cape fear river. We have found some revolutionary relics but still not sure what this is. No writing but looks to be a face of some sort on the top.
1970 COMPASS-
WHITES SILVER EAGLE-
WHITES DFX, 4X6DD COIL, 6X8DD COIL, 950 COIL, 10X12SEF COIL-
GARRETT PRO POINTER AT, GARRETT AT PRO , MINELAB EXPLORER SE with 8.5x12.5 Cors coil