Dating ibanez pedals
Ibanez serial numbers are unique identifiers placed on instruments sold under the Ibanez brand.
Ibanez guitars have used serial numbers since the mid 1970s.
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.
Exceptions are the Ibanez Blazer models which were made by Dyna Gakki and the Axstar by Ibanez models AX40, AX45, AX48, AXB50, AXB60, AXB65, AX70, AX75 which were made by Chushin Gakki (the flagship Axstar AXB1000 bass was made by Fuji Gen Gakki).
In cases where you have a serial numbe r 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.
In some cases a determination as to whether a guitar was actually produced as an 1987 or 1988 model can be inferred based on the finish (color) of the guitar, as some finishes are limited to certain years.