Right jnr mk2 and I just got it off......just !
It is TL12277 and made by our friends at the ford motor co in 1942 :-) chucked it in a bath of cellulose death to check the numbers.
Some traces of that nasty green stuff folk paint their carriers with
Will be in the post for you tomorrow morning matey
EDIT:
Just got your message Ben.. Hahahaha ha it's here if needed, if not refer to my email :-)
Either way folks we have established that the clip was used on Scouts and Mk1* carriers.
The nuts are 7/16th with a lock washer.
Jesus that celly has gone right to my head !