Interesting thread on HMVF with some wartime bikes...

[HF2300]

http://hmvf.co.uk/forumvb/showthread.php?56083-BSA-Para-Bike-amp-BSA-War-Time-Finish-Bicycles

 

[Prometheus]

Interesting thread yes I liked the wartime lights.

I guess if the siren went you would just shut them up.
And find the nearest shelter; tough as nails our great gran's.