Bavarian, the gun quarter was not in Aston but in fact almost in town all to the left of Steel house lane exiting town. My old fella was a toolmaker at the Birmingham small arms co, prior to joining the RAF WW2. Their symbol on push bikes was three rifles resting in a triangle. The giun quarter mainly disappeared due to redevelopment, spaghetti is about 3 miles North. I remember as a young engineer doing many surveys prior to that being built
So that the columns avoided the main Sewer from Brum to Minworth and other secret places.
Used to drink with the BSA bike tester Lol can't remember surname but Smith rings a bell, him and Percy Tate the Triumph tester used to be great craic after a beer or two.