My Edwinson Green and Sons rifle has the flat action back and the same rear sights as the 450/400 Jeffery rifle pictured in 500 Nitro's post.
All the Jeffery double rifles I have handled have an action
that looks "different" from other double rifle actions.
I do not mean the back of the action,I have seen flat backs, the round back, and another sculptured type back.
All on rifles marked Jeffery. My Green rifle has this same type action. Someone once told me that they thought Jeffery got his actions made in Europe, maybe Belgium. Has anyone else heard this?

I hope to meet any of the AR Posters who are going to the Dallas Safari Show. Just look for a Distinguished Group of Double Rifle Shooters, walk up and introduce yourself.