try this... http://sunsolve.sun.com/handbook_private/General/SerialNumber.html
you might be able to get to this link...
haroldkarl
The system serial number contains all or most of the following fields of information: *
Year year of manufacture
Weekweek of manufacture
Plant manufacturing location
Product type of system manufactured
Software Beginning in July 1997, systems manufactured with
Shop Floor Execution use C up to fff units/week and
D if more than fff units/week are built.
The Shop Floor System did not use this field.
Build number alphanumeric or hexadecimal build number
An old copy of that page (circa 2003 vintage)
is mirrored at a non-Sun (non-official), third-party web site.
http://www.sunshack.org/data/sh/2.1/infoserver.central/data/syshbk/General/Seri alNumber.html
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Edit:
Give the Stars to Harold.He's been contributing for years and is still stuck at Bronze.