They're very similar to a pair of Iittala candlesticks I have which I think are from the Kaj Franck 'Kartio' range (certainly they're the same very deep cobalt blue glass as other Kartio pieces I have). We know KF also designed for Nuutajarvi and your candlesticks are a colour he used so I'd say that they're probably a KF design. Dunno if that helps :spls: