Punch & Judy Milk Glass Sowerby Davidson Mug

A hard to find mug finely embossed with images of Punch & Judy. Unmarked. Made by either Sowerby or Davidson in the Stourbridge glass making region of the UK.  Height 4 inches. No chips or cracks, just a fleabite on the base and some black spots in the glass from manufacture. C1880/90.