Advice needed - Webley Junior

[Point & Click]

I know nothing, but it looks exactly like the picture of the phosphated junior on p103 of Bruces' book.

Its clearly not a Junior Mk11 which does have a different body shape.

Also surely a 45-53 Junior would have Birmingham 4 stamped into it, and not Birmingham?

Thanks. Forgot about the Birmigham 4!
With just Birmigham on it it will be post 1958 but still not a post 1970 Mk2.