Very similar to my first A50 Royal Star (500cc) Note:- You don't have to have James Bond's DB5 to be able to spread oil on the road.! I did own a Thunderbolt also for a while, but it didn't look anything like this one.! (see below) with these straight through exhausts, it used to feel like an earthquake when you stood anywhere near it
http://en.wikipedia.org/wiki/File:1969_BSA_A50.jpg