YEAR APPROXIMATE
SERIAL RANGE
1966, 1967 700000-700799
1968, 1969 750000-750999
1966, 1967, 1968, 1969 800000-800999
1966, 1969 801000-812838
1969 812900-814999
1969 8117000-819999
1966, 1969 820000-820087
1966 820088-823830
1969 824000-824999
1966, 1969 828002-847488
1966 847499-858999
1967 859001-880089
YEAR APPROXIMATE
SERIAL RANGE
1967 893401-895038
1968 895039-896999
1967 897000-898999
1968 899000-899999
1968 900000-902250
1968 903000-920899
1968 940000-941009
1968 942001-943000
1968 945000-945450
1968 947415-956000
1968 959000-960909
1968 970000-972864
From 1970-1975 the method of serializing instruments at Gibson became even more random. All numbers
were impressed into the wood and a six digit number assigned, though no particular order was given and
some instruments had a letter prefix. The orange labels inside hollow bodied instruments was discontinued
in 1970 and were replaced by white and orange rectangle labels on the acoustics, and small black, purple
and white rectangle labels were placed on electric models.
In 1970, the words "MADE IN USA" was impressed into the back of instrument headstocks (though a few
instruments from the 1950s also had MADE IN USA impressed into their headstocks as well).
Year(s) Approximate Series Manufacture
1970, 1971, and 1972 100000s, 600000s, 700000s, 900000s
1973 000001s, 100000s, 200000s, 800000s and a few “A” + 6 digit numbers
1974 and 1975 100000s, 200000s, 300000s, 400000s,500000s, 600000s, 800000s
and a few A-B-C-D-E-F + 6 digit numbers
During the period from 1975-1977 Gibson used a transfer that had eight digit numbers, the first two
indicate the year, 99=1975, 00=1976 and 06=1977, the following six digits are in the 100000 to 200000
range. MADE IN USA were also included on the transfer and some models had LIMITED EDITION also
applied. A few bolt on neck instruments had a date ink stamped on the heel area.
In 1977, Gibson first introduced the serialization method that is in practice today. This updated system
utilizes an impressed eight digit numbering scheme that covers both serializing and dating functions. The
pattern is as follows:
YDDDYPPP
YY is the production year
DDD is the day of the year
PPP is the plant designation and/or instrument rank.
The numbers 001-499 show Kalamazoo production, 500-999 show Nashville production. The Kalamazoo
numbers were discontinued in 1984.
When acoustic production began at the plant built in Bozeman, Montana (in 1989), the series' numbers
were reorganized. Bozeman instruments began using 001-299 designations and, in 1990, Nashville
instruments began using 300-999 designations. It should also be noted that the Nashville plant has not
reached the 900s since 1977, so these numbers have been reserved for prototypes. Examples:
70108276 means the instrument was produced on Jan.10, 1978, in Kalamazoo and was the 276th
instrument stamped that day.
82765501 means the instrument was produced on Oct. 3, 1985, in Nashville and was the 1st instrument stamped that day.
However, it has come to light recently that the Kalamazoo plant did not directly switch over to the “new” 8 digit serialization method in 1977. When the Nashville Gibson plant was opened in 1974, it was decided
that the bulk of the production of products would be run in the South; the Kalamazoo plant would produce the higher end (fancier) models in the North. Of course, many of the older guitar builders and craftsmen were still in Kalamazoo; and if they weren't ready to change how they built guitars, then they may not have been ready to change how they numbered them! Certain guitar models built in the late 1970s can be used to demonstrate the old-style 6 digit serial numbers. It is estimated that Gibson's Kalamazoo plant continued to use the 6 digit serial numbers through 1978 and 1979. So double check the serial numbers on those 1970s L-5s, Super 400s, and Super 5 BJBs!
Gibson's F O N System
In addition to the above serial number information, Gibson also used Factory Order Numbers (F O N) to track batches of instruments being produced at the time. In the earlier years at Gibson, guitars were normally built in batches of 40 instruments. Gibson's Factory Order Numbers were an internal coding that followed the group of instruments through the factory. Thus, the older Gibson guitars may have a serial number and a F O N. The F O N may indicate the year, batch number, and the ranking (order of production within the batch of 40).
This system is useful in helping to date and authenticate instruments. There are three separate groupings of numbers that have been identified and are used for their accuracy. The numbers are usually stamped or written on the instrument's back and seen through the lower F hole or round soundhole, or maybe impressed on the back of the headstock.
1908-1923 Approximate #s
YEAR F O N
1908 259
1909 309
1910 545, 927
1911 1260, 1295
1912 1408, 1593
1913 1811, 1902
1914 1936, 2152
1915 2209, 3207
1916 2667, 3508
YEAR F O N
1917 3246, 11010
1918 9839, 11159
1919 11146, 11212
1920 11329, 11367
1921 11375, 11527
1922 11565, 11729
1923 11973
F O Ns for the years 1935-1941 usually consisted of the batch number, a letter for the year and the instrument number. Examples are as follows:
722 A 23
465 D 58
863 E 02.
Code Letter and Year
A 1935
B 1936
C 1937
D 1938
E 1939
F 1940
G 1941
Code Letter F O Ns were discontinued after 1941, and any instruments made during or right after World War II do not bear an F O N codes. In 1949, a four digit F O N was used, but not in conjunction with any code letter indicating the year.
From 1952-1961, the F O N scheme followed the pattern of a letter, the batch number and an instrument ranking number (when the guitar was built in the run of 40). The F O N is the only identification number on Gibson's lower grade models (like the ES-125, ES-140, J-160E, etc.) which do not feature a paper label.
Higher grade models (such as the Super 400, L-5, J-200, etc.) feature both a serial number and a F O N. When both numbers are present on a higher grade model, remember that the F O N was assigned at the beginning of the production run, while the serial number was recorded later (before shipping). The serial number would properly indicate the actual date of the guitar. F O N examples run thus:
Y 2230 21
V 4867 8
R 6785 15
Code Letter and Year
Z 1952
Y 1953
X 1954
W 1955
V 1956
U 1957
T 1958
S 1959
R 1960
Q 1961
After 1961 the use of FONs was discontinued at Gibson.
There are still some variances that Gibson uses on some instruments produced today, but for the most part the above can be used for identifying instruments. For the most accurate identification you would need to contact the Gibson Guitar Corporation itself.