Hi Pete, it looks as though your obverse probably has the extra leaf, making it Gouby Obverse R, and also looks like the 9 is wide enough to make it a BP 1889Ad. MG in his new pages has the widest 9 as only seen on Obverse S, i.e. BP 1889Cd. He has not documented a BP 1889Ad. Have you had opportunity to check the width accurately?
I have just checked Richard's englishpennies and he has the widest date as Obverse R, but then called it a Cd. I think it needs to be either Ad (R + r) or Cd (S + r). Don't think the example is high enough grade to examine the important leaf area and decide which obverse type for sure anyway.
Hoping this is making some sense as 2 bottles down today!