I was in town yesterday to pick up some bolts for my old 1951 David Brown Cropmaster and chisel plough. The guy behind the counter wanted to know why I wanted 9/16 BSF bolts. When I said what tractor and plough I had he asked me if I knew why Aston Martin models were all DB... Turns out it is because David Brown started the Aston Martin marque. Closest I'll ever get to owning an Aston.... Cheers