have you done a search, a few threads on this already and a 'show us your 1150ADVse' thread....
nothing except they were the last 1150adv's to be built so in theory the most reliable, newest and best looking....not to sure about the gearing but easily findable on here...
After flogging a few BM's I came to the conclusion that any BMW SE is an end of the line parts bin special for a fixed price with some "special" paint. Most of the UK ADV's will have ABS and H/G's and some engine bars as extras.
I hope that white paint was metallic and not Plod White!