Low-dome Concentric

A neatly set up 6-row concentric, most likely from the Richardson glassworks. Presumably it began life as an inkwell, and was cut down after being damaged - which would explain the low dome. The outer row of white cruciform canes, the quality of the other canes, the colouring and the precise set-up - the bluish-pink row alone has 39 canes, the orange “star” row has 30 including 1 “rogue” cane - would all seem to point to the Richardson attribution - early 20th century.
The base is slightly concave, the pontil mark is still visible but has been smoothed by light grinding