An unusual cut and moulded glass candlestick, late 18th century, the sconce moulded with vertical

An unusual cut and moulded glass candlestick, late 18th century, the sconce moulded with vertical ribs over a facet cut stem, the helmet foot similarly moulded and cut to the rim, a large chip to the base of the removable drip pan, 24.5cm. (2)