For 50p. I couldn't leave this at today's boot sale. It is an 8" 5091 vase from the lesser known Nemsova factory, shown on P.9 of the pre 1958 catalogue on Marcus Newhall's CD. Having said that it could possibly be made by Rosice as Nemsova's moulds were transferred to them post 1965, but it is not in the catalogues I've seen so far. Another website gives the date at pre 1957, designer unknown.