Can Anyone Identify this Snifter Pipe Mark?

[Dreadlock Holmes]

I picked up this "unbranded" estate pipe. However, it clearly has a logo on the mouthpiece which has a push fit stinger. The pipe mark on the mouthpiece looks like a drinking glass I think. I checked pipephil EU BUT didn't find any matching pipe marks.

 

[WorthyStewart]

Probably no help but it looks like an upside down keystone to me lol