Wanted Lady Berkshire parts

Hi all 

A good friend has had a disaster and the back fell off her c1950 Lady Berkshire so she needs a caseback, movement and dial, possibly hands but I might have some. Movement should be easy enough but the caseback is circular with a built-in holder for a barrel shaped movement. Case diameter is a out 19.45mm so back should be a fraction smaller. If you have one or can suggest another easier to source model that would fit please let me know. Any parts or suggestions gratefully received 

Many thanks L