Hi,
The positions are given with reference to the Plan Quadrate in a Mitteltrepeze, which was an area 1 dg lat. by 1 dg long. Initially these were subdivided as described here
http://www.gyges.dk/Meldenetz%202.ppt#1 . The first 2 digits indicates the 1 dg x 1 dg area and the last 2 are the position within that area.
Please also see:
http://www.gyges.dk/reporting_grids.htm
Without an indication of the Gross and Jadgtrapeze, it is impossible to say were the positions you indicated are.
bregds
SES