Thanks m, if you scroll down to Seite 6 on the first link the uranium glass on the left is also very similar to mine, although the stem and foot are slightly different. Maker "probably Maltsov , 1857-ca. 1885", it also has the 1/4 mark moulded into the underside of the foot, from the collection of Bernard Cavalot. Mine is slightly smaller at just under 14cm. and 9cm. I see they also reference the Baccarat 2426 glass and the similarity except for the rim of the foot, all very intriguing.