Ceramic disk with large perforation in the center, roughly 1.2 cm wide, so not sure if it is a spindle whorl. Exterior of disk has slight taper to top and bottom with widest point at the middle. Found while screening Locus 12, the overburden of WSAC. Elevation 2139.529, 1 m from NW baulk, 2 m from NE baulk.