One of our (different motorcycle-) club members had a picture published in the last issue of Motorcycle Classics.
It is of a R27 he owned in the U.K. in the 60s. it was silver in color and the tank looks like it has chromed sides.
Anybody seen one of that color? He said he was told it was built especially for the wife of the chairman of the BMW owners club in the U.K. around 1959.