There's a fairly easy way to derive the manufacture date if you happen to know the serial number.  The serial number will be in the format: ‘LLLYYWWSSSS’; where ‘YY’ is the year of manufacture and ‘WW’ is the week of manufacture.  The date code can be found in the 4 middle digits of the serial number.  In the case of serial number SAD08300D4W, ‘08’ is the year code and ‘30’ is the week code. You can then decode the date use the following: Here are the Manufacturing Year Codes:                 01 = 1997                              06 = 2002                              11 = 2007                              16 = 2012                 02 = 1998                              07 = 2003                              12 = 2008                              17 = 2013                 03 = 1999                              08 = 2004                              13 = 2009                              18 = 2014                 04 = 2000                              09 = 2005                              14 = 2010                              19 = 2015                 05 = 2001                              10 = 2006                              15 = 2011                              20 = 2016   And here are the Manufacturing Week Codes:                 1-5 : January                  15-18 : April                        28-31 : July                          41-44 : October                 6-9 : February                19-22 : May                         32-35 : August                   45-48 : November                 10-14 : March                 23-27 : June                        36-40 : September           49-52 : December   I hope this helps. Steve ... View more