Glass Message Board

Hi.  Hoping someone help.  Found this lead crystal bowl in the North West of England.  Unfortunately no marks or labels.  I have run it through Google Lens but with no conclusive results - Lens appear to point to either German or Scandinavian origin.  It measures 15 cm in diameter and is approx 6 cm tall and weighs just over 1 kg.  Quite a distinctive pattern similar to an Orrefors design, but the walls of the bowl look much thinner than the Orrefors ones I've seen on the web.  Any help would be much appreciated.

Photos are very hard to work out from sometimes if you don't have the item to hand so apologies if this is wrong.
To me it looks like there was a hole in the pontil mark and it has been filled with a cemented piece of cork.  The cement has run inside the open cavity of the base creating the beige effect which has ruined whatever they were using for the red internal decoration - that looks like some kind of red enamel or paint of some sort to me.  Possibly poured in and then when dried they've attempted to 'seal' it with a cork cemented in place.?
Does that sound like it might be a plausible explanation? 
I would be cautious about what they've filled it with (the red and possibly the cement).  I never like that kind of thing having read about mercury silvering at length.

It's probably the photos and the way I'm looking at them but I don't understand what this means ?
'To my eye the underside of the base seems to have a pipe type pontil mark which has been flamed finished.'

To me that looks like an open hole in the base that has been filled in with cement type material of some sort?  Something like double walled mercury glass vessels were made and silvered internally then the hole in the base filled with a lead 'button' for want of a better description.  I wonder if it was some sort of liqueur type bottle?

Or like a mercury glass item but the inside cavity has been painted before plugging the hole to preserve the paint. Or where they put in coloured sand as a souvenir from the Isle of Wight or similar.

My first impression of what was going on at the base was that it looked a bit like somebody was applying a dome to a paperweight, but the glass cooled too fast and got solid at the bottom, so somebody did something with the remaining hot glass at the top and shaped it.
But I think that highly unlikely. 
Pwts don't tend to have a clear glass base applied under the decorated bit.