20x80mm FF Oerlikon


#1
  1. What does “a” after 16 mean? I see Municion.org has the same but with “b”.
  2. The proof mark at 3 o’clock is barely visible. What is it supposed to say?

#2

“a” is the sublot.

The 3h position is the air force acceptance mark, an eagle with the Letter “L” forming its body and inside the inspector’s numer.


#3

I would like to add a little to EOD’s answer. Some months ago there was quite a discussion about German sub-lot letters. I have since found a drawing that shows the terminology and usage of these letters.


#4

Ratenbuchstabe…? Advice letter…??? Please help me and my lack of knowledge of german.
Soren


#5

Rate is here a divison = sublot. Not related to any advise.