John:
Email them to me & I'll make sure they are posted & I'll try to describe how you could do it. The mixing of numeric for the month and letters for the year is a bit odd but I guess it is possible. I would say the position the mark holds might be a clue. Ground truth would be to contact Merkel with the serial nr. & they would put us on the straight & narrow.

Kind Regards,

Raimey
rse