Safe to say this is a Version 3, Type 2?
Serial umber is 407xxx (1941) 2pt, checkering, Redfield Peep with slot filled dovetail and flat bottomed sling studs?
Were the factory slings all 7/8"?
Somewhere along the way it was sent to G&H for the scope mount and has a 2-3/4" Bear Cub.