From the third production block manufactured circa March-April 1944. Features a "SI U" marked winged blade front and "S" marked two position flip-up rear sight with niter blue spring, Underwood barrel dated "3-44," type I barrel band with three weld scars, "circle U" marked type II slide, "U" marked blued type III fat bolt, and stamped trigger guard with "ordnance bomb" marked underneath fitted with an unmarked type III push button safety, "AU" marked type III magazine catch, "U" marked type III hammer. Fitted with an oiled walnut low wood stock marked "M-U" in the sling inlet and a "G.H.D./U.E.F." cartouche on the right side of the butt, topped off with a "P-U" marked two-rivet handguard. Magazine is absent.

Excellent, retaining 95% plus original arsenal parkerized finish, with scattered splotching of dried grease in the finish, light edge wear on raised areas, limited light spotting, light cycling wear, and limited minor handling marks. The stock is also excellent, with a few minor scratches and dings along with crisp cartouches. Mechanically excellent. A standout original example of an early 1944 production U.S. Underwood M1 Carbine!