Here's a lovely British racing bike located in Santa Monica, CA.
It has been restored and looks the part of a factory racer from the Fifties.
Some detail from the auction description:
This rare Matchless G45 was commissioned in 1955 and went immediately to South Africa. It is believed to be the bike that was extensively raced by one Borro 'Beppe' Castellani, a seven-time South African road racing champion (race # 80), over the winter of 1957 into 1958.
Truly a rare treat.