Regarding the first posting of the model b in 9.3X62 with full octagon barrel-notice that there is not a serial number on the barrel-I have one similar in 9X57 with no serial number on the barrel but is inscribed with the customary "Waffenfabrik Mauser" on the barrel rib. Caliber stamping on top of the barrel in front of the ring. Anyone else have one similar without the serial number on the barrel? Speed's book has it seems only a few pictures of full octagon barrels and they do seem to have the serial number on the barrel.