Have strong memories of some involvement of the ARB - Air Registration Board in the whole licensing process. Or were they just involved in approving the airies themselves?
Swapped my air force 1250 for these: Note: change from a Dept to a Division so we all got new books. And then they got a new logo, so new books once again.
then this:
And then these:
I held a Burger Lugvaart Lisensie, so there.