I read somewhere that, in their heyday, BSA made almost all the components on their bikes,
and that most had their 3-standing rifle logo stamped on them.
For the benefit of posterity (and the various classic bike stuff web sites) please send me whatever BSA component photos you may have, especially of itty bitty bits with rifle logo.
Amir Avitzur in R"G Israel where my Selbach is getting a skip tooth BSA crankset whether it likes it or not