I had one of those, a Rohloff eXp 560L with S&S couplings, lovely bike, sadly stolen from Stonehaven campsite in 2010.
The rear cog is most likely a 16 as SJS were fitting 38x16 then unless you wanted something else.
I would be bidding for it except I now have an ex display Rohloff eXp R model, can't justify a spare Thorn Rohloff tourer!
I was just over 5' 11" when I got mine and it was a good fit for a relaxed stance for me.
I have a longer body and shorter legs for my height, inside leg 31" for trousers.
If you fancy an expedition tourer go for it!