Victorian Chronograph

I've always had a fascination for watches, and in particular pocket watches.  Over the years I have built up a nice, but very modest, collection.
This is a Silver Chronograph - Late 19th Century - which I particularly like.  I used to have a gold 'twin' to this, but sometime in the mid '70s someone made me an offer I couldn't refuse.  I've regretted it ever since!