I used to collect Björkshult glass and seen the vase labelled. It's also very typical for Björkshult production.
Some pics of Björkshult pieces
(http://www.precisensan.com/antikforum/attachment.php?attachmentid=1675&stc=1&d=1141385290)
(http://www.precisensan.com/antikforum/attachment.php?attachmentid=5669&stc=1&d=1165075227)
(http://www.precisensan.com/antikforum/attachment.php?attachmentid=19732&stc=1&d=1206729973)