Jim, I don't think that was the case here, but with Simson it sort is all bets off; they just did things differently.
The inspection marks (the WaA marks) served two purposes. They showed that the part had passed dimensional checks (gauges) and/or gone through whatever other processes were required for that part, like heat treatment. But they also told anyone "down the line" that that part was OK to be used in assembly. If the part was not appropriately stamped, it would be set aside and not used.
The whole process was labor and time intensive. I am sure the folks who spent the war stamping small parts were darned glad they were not freezing on the Ostfront, but the waste of manpower (not many women in those factories) must have been incrediible. And it was absurd; by WWII, Germany had the most modern precision production equipment in the world; gauging and stamping each part (rather than just spot checking) must have absorbed tens of thousands of people in German industry. Even if some were not suitable for active military service, or were "guest workers" (as the Germans called foreign slave labor) surely they could have been better used elsewhere.
Jim