Its possible there are leftovers of 41 cof production, that were used in 1942, the 42 font is clearly different, as the WaA are mixed 883/519 this should be done in switch to 1942, anyway the b range is really high, possible that it was forgoten and then serialed to b range, mixed WaA means end of 41 production and no letter range of 1942. The serial number on pommel is most real bulgarian or romanian postwar. b.r.Andy