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.Ibanez guitar production is outsourced to several companies and facilities through the world and the numbering schemes are different in each region and/or factory.
Numbers from this era/format can be found stamped on the rear of headstocks (in the case set-neck or AANJ construction), on neck joint plates or on labels inside hollow-body guitars.
Most Ibanez models with this serial number format were made by Fuji Gen Gakki.
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.
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.
The false information this website generates has been propogated in numerous advertisements of sellers of vintage Ibanez guitars.
There is no proof whatsoever of any solid body Ibanez guitar produced by Terada.
The AR and AS models shared the same necks under the Artist flag.
Splitting the production up from a situation in which they were already both made in the Terada factory wouldn't be efficient, so it is highly unlikely that pre-1987 AR and AS models were ever made there.
Ibanez serial numbers are unique identifiers placed on instruments sold under the Ibanez brand.