What does the serial number mean on an MD4 and MC41?
I think it starts with production year and weeknumber, but what do the following numbers mean?
On MD4 and MC4x, the format is
YY=Year, for example 22 for 2022
WW =Calendar week
MM = Manufacturing location
NNNN = Unique number, starting over from 1 each week.
Some older products only have 9 positions in the serial number, there the year is given with only one digit.
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