Per page 2-22 (Acrobat page 64) of the "Merlin MAGIX Integrated System Maintenance and Troubleshooting Release 3.0 and Earlier" manual:
A serial number indicates the year and month of manufacture, the location of manufacture, and a counter number that is unique to that module. The digits are arranged as follows:
- The first two digits are the year manufactured.
- The next two letters show the place of manufacture.
- The next two digits are the month manufactured.
- The last six digits are the unique counter number.
For example, in the serial number 99DR11034567, “99” is the year, “DR” represents Denver, “11” indicates November, and “034567” is the unique counter.