With over a dozen manufacturers of the S84/98 T3 and changes during it's production life (1934-1945), the numbering of bayonet components typically followed two patterns. Earlier military contract bayonets often had components numbered to a internal serial number on the tang. Serial numbers on the exterior of both bayonet and scabbard were applied to track the number produced for each year. However, some manufacturers either began numbering the bayonet components to the external serial number or transitioned to this. Eventually most of the components were not numbered at all, with exception of bayonet and scabbard. Behoerden production (those destined for users like the Reich Post, Police, or for export) typically were assembled using the internal serial number. From what I see on your bayonet, the catch bar is numbered to the internal number but flashguard to the external one. This is not uncommon. In all likelihood, the catch bar button would also have matched the internal number as well. I suspect the catch bar & button had tolerances which were mated to each bayonet. One can see how perfectly most catch bars are flush-ground to conform to the pommel and fit of button as well. Anyone whom has had to replace a catch bar will note they typically do not fit anything like the original one. Perhaps for this reason, they were numbered to the internal number... with the flashguard and grips often using the external serial number instead. I have also seen a armorer replacement blade which came with the mated catch assembly. Seems odd that such a nearly complete bayonet would be used as a replacement for a damaged one, but that is classic Teutonic modus opperandi...