Brian - The 1944-dated box would indicate the the Dania site is incorrect,
and that the last loading in Denmark of the Bergmann-Bayard round was
in 1944. I have the “44” box in my own collection. While empty, I think
it is safe to assume that the headstamp of the rounds was 19 (Crown) 42 HA.
As you probably noted, in all my research, I only found three different headstamps,
including the dates on them. The dates, each with different headstamp content, are:
H L 34
H A 38
19 (Crown) 42 HA
The research included a search of Scandinavian collections, other American collections,
including that of Woodin Laboratory, and a very fine German collection. Up to 1933,
the Danish rounds had no headstamp, but we now have a label copy of a box from
patronerede i Laboratorieværkstedet, Denmark which was not mentioned in the book.
The earliest loadings were bought from Anciens Établissements Pieper (AEP) in Belgium.
The first order was for 300,000 cartridges, and were packed in white 25-round boxes. The
second order, for the same amount of rounds, were packed in red boxes of the same
quantity, 25-round boxes. There was another order for 200,000 rounds in boxes holding
2 six-round clips for a total of twelve rounds, but it was never completed. While an AEP
headstamp exists, it was evidently for their own commercial sales, as the rounds sent
to Denmark were without headstamps. We did not have this information at the time the
book was completed.
I am ashamed to say that I cannot find my documentation, which as I recall was a series
of emails with one or more Scandinavian collectors. Therefore, I must consider the following
to be conjecture on my part. It seems clear from the fact that only after 1933, there were
only three runs of cases for the 9 x 23 mm Bergmann Bayard cartridge done in Denmark,
and that these cases, judging from many box labels, were loaded as needed over the
years until what was likely the final loading run in 1944. We firmly believe that were there
other dates, at least some of them would have shown up in the 80 or so years since the
first dated headstamp from Denmark. It almost cannot be coincidental that every major
collection has only 34, 38 and 42, a four-year spread between the years in each instance,
and no other dates are known to any of the collectors. Certainly, if someone has knowledge
of another Danish round with a date different from those three, a photograph proving existence
would be hugely appreciated.