[color=#333333][font=Georgia,]Just looked up the serial number of my BB3000. [/font][/color]
[b]QJZ013F[/b][color=#333333][font=Georgia,] gives [b]'Custom Shop, Made in Japan[/b][/font][/color][color=#333333][font=Georgia,][b], December 2004'[/b] . [/font][/color]
[color=#333333][font=Georgia,]Q=0 & J=4 (2004). [/font][/color]
[color=#333333][font=Georgia,]Z=December, [/font][/color]
[color=#333333][font=Georgia,]013 = Unit number, [/font][/color]
[color=#333333][font=Georgia,]F = Internal code.[/font][/color]
[color=#333333][font=Georgia,]The code on my BB1000S (131468) is not as specific, and just gives 1984. [/font][/color]