Amethyst purple blown glass vase( Blenko?) WhitevSwirl pattern/brushed

Gorgeous lovely vintage Deep Purple amethyst color blown glass vase possibly blenko. I have researched blenko and Murano very similar patterns but no defining markings,can tell that it's made well it's heavy has a pontal mark. A gorgeous white swirl pattern down and a lovely shape wonderful addition to every collection or beautiful with flowers. NO DAMAGE