Dating ibanez jems
It applies primarily to electric guitars, but some information may also be applicable to acoustics.
The information on this page is culled from several sources both on-line and off-line and represents a distillation of the available information.In most cases the country of origin is provided in the same location as the serial number.In cases where you have a serial number but not a country of origin, the origin can sometimes be deduced from the serial number, although in this case it's very helpful if you have at least a rough idea of the date of manufacture.Note that there is opportunity for confusion with some of the other schemes listed here with regards to the initial letters F and I, however, this format is the only one which has just six characters.It is believed that all Japanese-made models with this serial number format are produced by Sugi Musical Instruments Ltd.Serial numbers can be useful in determining the age of a guitar as well as in which country and by which builder it was produced.
Unfortunately, there is no single unified format used for Ibanez serial numbers.
Some sources say the practice started in September 1975, but serial numbers indicating production as early as October 1974 have been spotted.
The serial numbers are generally a character string containing letters and numbers, although some are purely numeric.
It's unclear whether this numbering convention is rigidly enforced, that is, each month actually starts out with the number prescribed above, or if this is just a way to estimate the production month.
What is known is that this rubric is used by Ibanez to set the production date for warranty claims.
One can perhaps make a reasonable guess as to whether a model with an F7 serial number was actually produced in 1987 or 1988 based on the production sequence (the last five digits of the serial number).