400 NE, I agree with you on the dating of Dustin's gun. Does your catalog specify that that particular gun is a screwgrip? I have a couple photos of screwgrips, and both have the word "patent" around the screw through the top lever--and they both also have a small screw set into the rear of the large, spindle screw. Without being able to see whether the spindle on Dustin's gun is threaded, (Dustin, you should be able to see the threads in the slot in the standing breech), from the photos at least, it looks as if it could be just a standard Scott spindle with a 3rd bite. Looking down on the receiver from the top, the top levers on my Army & Navy pair (made by Scott in 1933) don't look any different than on this gun. But mine have Greener crossbolts, definitely not screwgrip guns.
