This is such a cool "time capsule". If all the parts are there, and the ones that should be serial numbered to the receiver match- than you have an excellent un-touched gun. The duffel cut through the wrist is a problem that will need to be fixed. But a repair is possible that could make a it strong enough to shoot again. It looks like the stock was not sanded and had great markings. Personally I would take a honestly repaired stock in this condition over a sanded/refinished stock. The rust on the parts does not look too bad, and if these parts were "boil conserved" (boiled in distilled water then carded with a fine wire wheel) than they may come back to look very nice. I see a project that had great potential if it's complete and matching.
If it's matching and complete, in it's current state, I would put a $3000 tag on it. If it was conserved, cleaned, reassembled and the wrist cut professionally repaired you would be looking at around $5000 or more with the current market for G43's. These are just my opinions on a ball park value. I am sure others will chime in.