M1918 Marlin Rockwell receiver, shear crushed.  Not A2 modified.  No rebuild stamps, SN 29481

Blue finish, pitted (but not rusted).  The shear makes putty of them but the M1918's stretch before they snap (unlike the A2's that are cast and crumble).  You get three pieces of receiver, a barrel stub, parts of a bolt and charging handle.