Need some help on this 63|Winchester Sights|Forum|Winchester Collector

Hello friends.  It’s been a crazy last 15 months or so, and I started a business during covid that is just now opening.  It has been a draining year on my finances and gun buying has been nil.

But old habits die hard, and I came across a collection that was too good to pass up.  One of the things I acquired is this 1936 model 63 carbine.  It is missing the rear ladder but had this receiver sight on it.  I don’t see any marks and it appears to be a redfield of sorts, but I am unsure.  If any of you much more educated folks can tell me what it is I would appreciate it!

Thanks in advance, 34871.