I appreciate your thoughts. I agree with your assessment of depot/armorer rework.S/174 bayonet is WKC - S/176 scabbard is Paul Weyersberg. The 928 serial number stamping is not in a standard font on the bayonet or scabbard for either of these makers. The numbering is however similar to each other on both pieces. Indicative in my opinion of the numbering being stamped at the same time/hand perhaps at depot or by an armorer. The blade may also have been scrubbed at some point and refurbished. There appears to be a slight ghost of a number stamping to the right of the 8? The 36 on the bade spine appears to be an overstamp in a slightly different font. The 36 stamping under the S/176 on the scabbard is not in the proper "factory" format for Weyersberg for that period - should have the entire four digit year of 1936. The font of these two stampings is clearly different as well. All of these observations are evidence of a refurbishment or reworking to the piece at some point. My thoughts only .....
I will throw in my 2 cents: depot assembled from spares. May want to check if there are tiny assembly numbers on the parts.
I believe the rig is original or period so I respectfully disagree with Andy. There is no evidence of any grinding and the surface finish looks original (scabbard). What is interested is why overstamp the spine with the same '36'.