Serial numbers keep track of products made.

Their format is typically:

OSE-D3D-V18.10-MJ-KIT1-special codes

first is company
Second is machine - 3 letter capital name. See Machine Codes
Third is version. See Genealogies for base versions.
Fourth is the person who verified the quality control. This will typically indicate the location of production in distributed manufacturing.
Last is either KIT or XM - products shipped in kit form or via an Extreme Manufacturing (XM) workshop. KIT or XM is followed by the number of the build. To avoid dead space -just the number is shown.
Any special codes may follow the last number, such as location notes, special requirements, etc. If nothing, leave blank
All capsfor easy recognition

Serial Numbers Lists

Serial Numbers