As I am sure most Skrdlovice collectors will agree this looks, as Anik suggests, to be a version of the famous Kotik "propeller" vase made over a number of years and like much of the Skrdlovice hand made production, is subject to wide colour varieties and some flexibility in application of decor, the fins can protrude a lot on this pattern or hardly at all, depending on the market demand of the season and individual glassmaker's whim of how to apply the pattern, it seems very likely to me this is the pattern Anik is thinking of .. 100 per cent fifties Skrdlovice,
Robert (bOBA)