Not to dredge up an old thread, but I happened to read this over again, and there is an interesting point on the bolt of the type G. I entirely believe it to be original IMO. I largely collect JP Sauer and they are of course built on Oberndorf actions sold to the trade, and I’ve been noticing a trend on prewar guns. I’ve owned 3 maybe 4 with identical bolts to the transitional one shown here, with their utilization extending to at least 1911 Sauer production and possibly later. Again these are bolts numbered to actions that are produced well after the improved bolts came into usage, and so, obviously sat in stock somehow, possibly leftovers from a contract or some such.