In full view here it is, and worth a considerable amount of money

Its is Birmingham Small Arms finest a Gold Star no less, but this particular model is known as the DBD34 Catalina Scrambler.
It was named to commemorate BSA and Chuck "Feets" Minert's success in the 1956 Catalina Grand Prix
And Catalina-an island off Los Angeles Californiafrom owencollection.com
The machine he rode was a 1956 BSA Gold Star Scrambler. Chuck comments, “I changed the tank to a 5 gallon, borrowed a front brake baking plate with a scoop (for additional cooling), and used a 19” front wheel instead of the standard 21” wheel preferred by the English!” The west coast distributor for BSA, Hap Alzina asked the factory for a replica of this bike. By the late 1950’s, the US market was the strongest in the world for BSA and they followed his advice and responded with the Catalina Scrambler in 1959. The machine would go unchanged until its production stopped in 1963.
Regards Neil