The cancel was in use since 1940 it remained unchanged untill it was replaced with a simular cancel which read: POST POST interrupted by 2 Maltese crosses. The First Posterijen example still stayed in use for quite a while. The example shown is from the early 80's.(exact dating is difficult).
The cancels to my knowledge were not issued to postmen, but only to post offices for use. Postmen still had to use pencil/ballpoint etc.
They are out there, but not in such large numbers.
Rod: Google the following: Posterijen stempel.
