If it is what I think it is, it's Empoli and should have a tall pointy stopper, also ridged, with the plastic bit. Normally seen in teal or amber. Red would be very unusual, and quite desirable in the secondary market if it has its stopper, Cat.

The pics are taken from an angle I'm not used to seeing, (from slightly above, so I can't see how round the bottom part is, in profile) and I've just given the last of mine (teal and amber, missing stoppers) to a CS, so I can't check their bottoms.