Allin of croydon information needed

47 Ronin

Retro Newbie
Hi
Not sure where to post exactly but I’ve inherited a number of bikes/frames from my father.
One is an Allin with the frame number 999. I’m guessing that places it as a mid 50’s build.
My father cycled for Charlotteville CC and lived in the Woking Surrey area.
Any clearer dating gratefully received. Many thanks.
 
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