With Uwe posting Jam in the Ric Dept I did a dig through and find something for this Dept...
When I went electric mid seventies I bought an EB2/Rivoli copy from a shop in Hounslow (near Heathrow, London) - the PC was in the shop at the same time but out of my price range... (£200 or £220 approx.)
A year later, I saw a white EB2/Rivoli in the same shop for circa the same price but I only had £180, so popped back home and begged the extra cash, and went back to find it had been bought, apparently by Bruce Foxton...
Oddly, the PC was back, for £180, so cash departed and that one came home...!
Anyway, this may be that white bass...