I have an m1 Carbine underwood serial number 1428641 all org, parts, hi wood marked with UEF/GHD in box also has the cross cannon beside the box,barrel date is 4-43 underwood,front band is type 1 handguard is two rivet with Petersen in script with U,Bolt is flat,blue marked with .U. Rear sight is the flip type s on left side leaf is marked .U. Has aP in circle on pistol grip,hammer is dogleg blue marked.U. All parts of this carbine are marked with the underwood U or has the ord, bomb on receiver, trigger hous, front sight sight has.U. On it this carbine looks like a bring back, I don,t know but it has a lot of patina on barrel and receiver, no import stamps, no cracks or repairs, dark wood handguard matches perfect with stock. I have pics by e mail would like to know the value of this carbine also in sling well there is PU and no rebuilt marks bore is shiny and bright, I know it's hard to give a good value of this carbine but it is really a nice old looking carbine that looks like its been there.