X189player wrote:
Ibanez serials start with a letter month code, then two digits of year code, then a bunch of sequential digits.
It seems my lot in life to play devil's advocate.
This for the most part only applies to later models dating after about 1976 or so when serials became something more than just arbitrary numbers stamped on plates likely purchased by a number of guitar manufacturers. Before this Elger/Hoshino was no different than any other distributor and contracted with a number of manufacturers, many of which used the generic neckplates.
Using the generic neckplate as an indication a guitar's origin would not necessarily be concrete or without flaw.
Many of the b-shelf Japanese copies of the late 1960s and early 1970s bore neckplates such as this. Some with "Steel Adjustable Neck" and others with "Steel Reinforced Neck". No rhyme or reason to the two phrases either as some with the "reinforced" were attached to guitars with adjustable truss rods (well, adjustable to a point anyway).
The only way we could use this as an indicator is to prove beyond any doubt that a neckplate with a particular font, phrase, and text placement was used specifically by a single manufacturer.