Glass ribbed bowl
Not on view
Translucent pale blue green.
Vertical rounded rim; deep sides with plain band around top, curving in to slightly concave bottom.
On interior, one wide horizontal groove below rim, and two narrow, close-set grooves cut in a band around lower body; on exterior, thirty-eight shallow and slightly slanting ribs, tapering downwards and extending to edge of bottom.
Intact, but some internal cracks; pinprick bubbles; dulling, deep pitting, and iridescence, with patches of thick creamy weathering.
Rotary grinding marks on interior and on plain band around top of sides.