'The Bell Pen' post-war ballpoint, Cranleigh, UK

Hello all. I'm guessing there are many 'found this pen and want to know more about it' messages to this forum. Shamelessly, mine is another!

This is a ballpoint pen, given by my great-grandfather to my grandmother in 1947. I have posted pics at

http://www.richandcath.co.uk/BellPen/

It's got a black-painted metal body with brass clip, and is called a 'Bell' pen, made by C.B.projections (Engineering Ltd) Cranleigh, Surrey, just post-war. The link shows all the documentation wrapped around the pen. The pen stilll works!

I have 'googled' everything I can think of to find any references to the manufacturer or pen but drawn a blank- suggesting to me (perhaps naively) that there may not be many around.

Grateful for any light that anyone can shine on the pen or its heritage.

Cheers

Rich.