LOTS of them were returned shortly after they were released because the original pin design was a "bad" one and broke quite easily, and if one sent the gun back for this repair, the bolt was automatically 'swapped" out for the newer, redesigned one, and yes, they were all in the white, at first, we have seen some of the early redone ones, and then later one they did the half polished off, all blued bolt, with the front end "buffed" off...as the two piece box is numbered as you say, our guess that would have been an early redone one,but after the hinged boxes of course,sooooooooo by then I'd venture to say the "half& half" bolt is proper,and of course there is NO way of knowing as service did NOT keep those records............
Walter is having a nightmare of a time with making those replacement firing pins as EACH one is "fitted" to the bolt, they were all hand made back then, and as said a very "piss poor design" the way they did it, WAY over engineered needlessly....the later change was needed, so do NOT dry fire those old early low numbered, all white, type 1 bolts......we "retired" all of ours some time ago..........by the way, the "best" of BOTH worlds is to take the newer bolt, weld it up ( the support slot) drill out the top, front and remove the support from a recoil assembly and you can "replicate" the LOOK< but maintain the newer pin design, for usage.........have'nt done or tried this one ourselves yet, but was shown a couple, years ago, by another gunsmith back east...........
