It appears to be in amber pearline, a colour not made by Davidson, only, in my experience, by Greener and Burtles Tate. In my years of dealing in British pressed glass fancies, I have never seen this gem before, in any colour.
It is more likely to be BT than Greener; BT designs were more innovative and flamboyant. It doesn't seem to be a registered design, possibly because Sowerby were already producing a slightly different gondola.
Had I seen this auction before it completed, I would have put a much higher bid on it.
Well done. If you ever want to sell it .......