Glass ribbed bowl
Not on view
Colorless with pale blue green tinge.
Plain vertical rim with top edge ground flat; plain, slightly concave band around top of sides, then bulging outward before curving in sharply to slightly concave bottom.
On interior, two concentric grooves around outer edge of bottom and small broader and deeper circle at center; on exterior, seventy-eight vertical ribs of slightly varying length, with tops ground off.
Intact; pinprick bubbles; deep pitting and iridescent weathering on interior; similar pitting and iridescence on exterior.
Rotary grinding marks on interior and on plain band around top of sides.
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