Webley and Scott made a shit load of Actions used in DR's,
often sending them in the white to others to put names on and finish.

The PHV1 and Screw Grip being 2 actions of great fame.

Maybe they made one for a customer with their name on it
for once, as opposed to Rigby, Jeffrey et al.

Is your one a Boxlock, Ejector ?

I have a 375 Flanged Magnum by Webley but
with another name on it.