A super art glass swirly paperweight by Liskeard Glass, Cornwall, England. It's dated 1975.
A handmade/mouth blown desk sculpture with blue striped arcs (two-tone blue), with large central enclosed bubble, in clear glass. It's stamped and dated to the base 'LG 1975'. About 8cm wide x 6.5cm tall. Weighs 570g. 
(During the 1970s, glass designer Jim Dyer left Whitefriars to work at Liskeard. He created a range of knobbly vases and bowls, similar to the Whitefriars range by his brother Harry Dyer. Liskeard Glass is now known as Merlin Glass.)
Very good example with no noticeable flaws. There's one dot of enclosed ash.
Free P&P to the UK.