Bubbled Soda Glass Bottle, Biot style but with ground pontil

Hi

After seeing a few bubbled soda glass pieces coming through IKEA lately I'm not convinced that this is an old piece. I was thinking Biot but the ground out pontil and lack of acid etched name would seem to rule this out. Approx 9 inches tall with a 1 inch wide ground out pontil dip on base.

I was told that the early Biot pieces were not etched and did indeed have ground out pontil,never been able to verify but all the pieces I've seen were of good quality so you never know.