so...had to go up the garden route for work......found these at a "plaas dorpie take aways"
they were being used for ornaments...along with a lot of other old car stuff.....They're pretty complete and the screws turn. Tractor superchargers?
Spoke to the wife of the owner...she says she has no idea what they are
her husband bought it as part of a load of scrap metal from a farm auction. She even wanted to know if we knew what they were.....i nodded knowingly 
