Plum or Damson ID please

[Greenleaves]

Hi All

I inherited a plum or Damson tree on my plot and wondered if anyone can give me an ID?

The fruits are yellow and about the size of a bantams egg.

[Garfy45]

Looks a bit like coes golden drop but normally has red spots.
It looks like the fruit is sweet.But only 45% sure

[Greenleaves]

Thank you Garfy