Dave, you are of course spot on about the 5115, but it has a cream dial and seems to be available in [your favourite] RG only. The date function on Chris' watch, and the clean dial and WG combination, to my mind gives it just a fraction more 'wear-ability' without detracting at all from the classicism of the watch. Dave got me with his: now it looks like you've done the same Chris!
All the best (and thank you both for responding),
pplater.