1887 Florin (Proof?)

Yes you are probably right Ottawa, I was not aware the double florin was separate from the standard florin.

The one I have is the same size as the Australian florin, 28.5mm

Another question :)sorry for my lack of British coin knowledge.
I also have a 1887 shilling, but it has the young head on it. I am guessing there was a change over in that year?

I was looking through a few coins and decided to look at the graders. If anything at least they would correctly identify a coin . Well I would hope so. Amazingly although not recorded in Davies British Silver coins there are differences in where the obverse lettering is placed. Last A almost touching bust of victoria and far away from the bust. The only differences recorded in the book concerns the cross on obv and rev and the different date variations and inverted 1 in victoria . But no mention of any other differences. So it appears we have new varieties a foot :) I looked at one coin from CGS.UK our graders in the UK and 1 from PCGS and they were both different obverses. Not sure how many rarities will be thrown up from this to go along with the Arabic 1 and and Roman I dates and inverted 1 in victoria for I which was a clogged die but nevertheless will be interesting to see in years to come