She's an A. Hollis best quality extractor with manual safety in 500/450 3.25" NE. Made in 1906 by Leonard of Jefferies rifle fame. She has claw mounts, a flip up ivory night sight, an express sight, two folding leaves, and a ramp sight out to an optimistic 1000 yards! Here's some pictures of the gun and a target from today!
Me with my baby: