Leather CHAIN CASE restoration

[icycle000007]

Hi there all, I recently came across a "LEATHER CHAIN CASE" on a vintage Raleigh BiCycle.

It is pretty intriguing as I have never seen it before.
Thus I appreciate to learn more about it. Hence I am here seeking more info. on this.

Many thanks in Advance.

 

[Yellow Saddle]

Photo?

 

[raleighnut]

^^^^^ wot e sed