Mike, I see your point.

However, it is also known that inspectors have been transfered to other manufacturers and thus one can find the same WaA stamp on items of different makers.

Regarding the WaA stamp on the makers mark, I assume he had no other chance than to stamp over the makers logo. The instrument in question is a suction cannula with a round design (see picture). There are only 2 spots with flat surfaces at this instrument for stamping. On the one spot is the makers mark and on the other spot at the opposite side is the individual number of the instrument. I assume it was more important to identify the instrument number than the makers mark. The number on the instrument made it easier for the nurses or the doctors to sort all instruments in the set to their specific position.

Of course, one can only speculate about these things after 70 years.

DSC00086.JPG (63.42 KB, 60 downloads)