It's an A. G. Russell, Gent's Hunter model, 6-3/4"OAL.
Great looking knife from a great knife maker. Thanks.
I haven't Squirrel hunted in years, so no photo's to add. When I did a Kleingunther K22 was my rifle of choice. Now it would be a Kimber Hunter or a Kimber HS restocked in a Kimber Varmint stock.