Dating a gibson acoustic
The B-45 was only available as a 12-string edition; the B-25 was available as a standard edition, a 12-string edition, and a ¾ scale body edition; and the B-15 was only available as a standard edition.
The B-45-12, a 12-string edition guitar introduced in 1961, was the first B-45 model guitar available and the first B series overall.
The B-25-12 had a cherry sunburst finish and was available through 1970.
Gibson manufactured the natural finish B-25-12-N through 1977, the last year of production for all B series guitars.
If there is no eight-digit serial number found, check the bottom of the guitar neck, which can be seen by looking inside of the guitar's sound hole.
There will be a three- to six-digit number stamped in black, and possibly a two-digit number penciled in red.
In this sequence, "Y" indicates the year it was made, "D" indicates the day of the year, and the "R" represents the ranking number.
For example, 80505210 means that the guitar was made on Feb.
It featured a mahogany body, [spruce] top, rosewood fingerboard, and natural finish.
From 1991 – 1992, Gibson manufactured a reissue of the B-45-12 with rosewood sides and back.
Gibson introduced the B-25 in 1961 which featured a mahogany body (solid back, laminated sides), solid spruce top, and rosewood fingerboard like the B-45.
Gibson also referred to the B-15 as a "student model" and manufactured it through 1970.
It remains one of the only guitar manufacturers to produce its instruments exclusively in the United States.
Below are some checklist items to determine if yours is real. It doesn't have the Mother of Pearl "Gibson" or crown inlay. It should also have "Made in USA" underneath the serial number.