Since 1941 is possible that Waffen SS got the equipment directly from army storages same as from commerzial contracts too, but the WaA proof was accepted as enough quality for W-SS so they neednt any additional markings. Other point are the TKV or A-SS where the bayonets were obtained continuosly by only commerzial contracts. There could be special serial strings like typical on a police bayonets or others.
It is estimated that Wehrmacht ordered in 1934-45 14.5 Million bayonets, all of them are WaA proofed.
Andy,
You state that the WA was accepted as enough quality for the SS and that they would need no other markings. I would agree with you as far as quality is concerned. However, what we are talking about mostly is property stamps. Property stamp has nothing to do with quality.
Richard K
