............and if it's a Whitefriars selenium ruby twill more than likely be cased in clear (soda based) glass not lead (water test good idea if the casing is very thin). Your vase looks uncased in the picture so I got muddled then last night it was a classic case of 'brain drain'. A few chunks (not by any means all) have managed to fall into position, though, Pinkspoons and...
I've had a chat with my old pal Hudders (Graham Hudson) who collected these some time back. He's had a look at yours and feels it's Whitefriars - 9355 mini version of 9117. He found many variations in lobe prominence (and attendant crease depth) from vase to vase. Mr A is away but've managed to sound things out with another glassmaking chum who has confirmed Hudders and your findings in lobe/crease variation by way of the method in the glassmaking.
I speculated earlier that the vase may have been a frigger based on a lobed or molar form. Well it isn't a frigger but is a variation on the lobed and molar forms. The tumbler part isn't important - that was just me being incorrect. The ruby ball is first blown into a bubble mould. Then it's cased in clear glass. Then it's blown into an open optic mould as are other lobed and the molar shapes - in your case an open optic with 5 creases. At this point the vessel/vase is roughly half the size it's going to be - the glassmaker then blows it further and shapes accordingly .The variation in lobe prominence is a function of glass weight (and gravity etc - imagine the maths - cor - I can't:

. If the glass is heavy and cased in a lot of crystal the lobes are far more prominent - that's the molar vase. If the glass is very light together with very little casing the lobes can almost be said to have been 'blown away' - there may be barely discernible creases to indicate they're there and you'll have to search the underside carefully to find the lobes. There will, of course be many 'in betweens' because the glass is hand blown.
Does this help Pinksppons? PinkyX PS the bubbles are fine says Hudders - Vidfletch still questioning