Typically the datastring for the preliminary pass is on the lower rib and the final pass is on the tubes just forward of the flats. The span from 9.6mm to approx. 11mm is a bit of a stretch from the preliminary to the final, but is possible. The Franz Denk example appears to be devoid of the final pass marks, weight of tubeset in grams on the lower rib, along with the stamp noting Nitro powder exposure. Thanks Jim for the effort.

Kind Regards,