[Gerhard]

@edNorth:
Thanks for the exhaustive explanations.

However, each time when we refer to the put-together process of an aircraft we should say "call them JFM produced, FZB assembled/delivered."? This seems to be a bit impractical, isn't it?

What does Boeing at Renton or Everett? What does Airbus at Toulouse or Finkenwerder? They build aircraft.
What does BMW at Munich or Deggendorf? They build cars.

Every big manufacturer today builds something and uses smaller or larger components to accomplish this task.

Ok, you call this technique 'to assemble', most people in the world say 'to build', and anybody knows that there are many suppliers/subcontractors are involved - today and already in 1937.

So we should no longer quibble about words.

Coming to the (unfortunate) HB-HOT:
The part plates on this aircraft have some stamps on them which I cannot identify:


Any idea?

Gerhard