I'm trying to work out a date from my lovely book on the Roubiceks.
(Sklo: Miluse Roubickova, Rene Rubicek, published by The Studio Glass Gallery, London W2
ISBN 0 9536026 0 5)
There is an image of a very similar piece, but just in amber and clear glass, which is the property of Harvey Littleton, and dates to '63;
The very tall clear glass "sticks", which comprise outdoor sculpures, with similar decor, date to '67.