Hi Robert
Many thanks for your extremely prompt reply. Just think how long that would have taken by snail mail!
Thanks also for the useful pic. It confirms what I thought about the lights - the one I have seen that has that arrangement has amber blinkers mounted, on a similar bracket, above the red rear lights. It also has a (civvy) number plate mounted a bit further to the right (further from the centreline) than yours, but it must be on some sort of bracket as it appears below the chassis. I begin to wonder if the number plate was originally mounted on the mudguard above the reflector.
My model may be small, but I don't have to contend with the degree of damage, rot and rust that you had to start with! I'll try and remember to put a pic on this thread when its finished.
Chris