Hi Ron, here are some of mine, the first 5 are mint and complete, the last 2 are lacking caps and tail caps, but these will turn up.
Pic 1,1942 dated tinned body para illuminating cap is marked SW 41
Pic 2,1943 dated black painted body para illuminating cap is marked SW41
Pic 3,1967 dated para illum cap is marked HB&S 12/65
pic 4,1964 dated para illum cap is marked 11MB 1/61
pic 5, Inert instruct 1960s cap is marked 11MB 4/64
pic 6, all together
Pic 7 black body and tinned body WW2 no caps.
Hope this helps Ron.
I have lots of mint british fins if you ever get a spare of the Aussie type to trade? Cheers Tig