YEAR, MODEL NUMBER, SERIAL NUMBER
1986, Begins with the letter "S", Begins with the number 5
1987 Begins with the letter "S", Begins with the number 6
1988 Begins with the letter "S", Begins with the number 7
1989 Begins with the letter "S", Begins with the number 8
1990 Begins with the letter "J", Begins with the number 9
1991 Begins with the letter "J", Begins with the number 0
1992 Begins with the letter "J", Begins with the number 1
1993 Begins with the letter "J", Begins with the number 2
1994 Begins with the letter "J", Begins with the number 3
1995 Begins with the letter "J", Begins with the number 4
1996 Begins with the letter "J", Begins with the number 5
1997 Begins with the letter "J", Begins with the number 6
1998 Begins with the letter "J", Begins with the number 7
1999 Begins with the letter "J", Begins with the number "A"
2000 Begins with the letter "J", Begins with the number "B"
http://www.themusicbox.biz/jupiter.html
How old is my Jupiter instrument?
Jupiter serial numbers are easy to understand. They start with a prefix of the alphabet ie J = 2007 date of manufacture. Work back until A = 1999 then go back from 7 (the first number) ie 7 = 1998. If you have an older instrument once you get to 0 start again from 9 as it = 1990.
http://www.jupitermusic.co.uk/rdas/p...&TemplateID=83