My father brought me my first imported guitar, a Gibson.
1952 – 1960 YEAR APPROXIMATE LAST SERIAL NUMBER PRODUCED 1953 1000-1500 1954 1500-2200 1955 2200-3000 1956 3000-4000 1957 4000-5700 1958 5700-8300 1959 12035 1960 – 1969 The following chart displays the first and last serial numbers of guitars produced in each given year (1960 to 1969).
There are other resources for dating Guild guitars which you may also want to consult, such as: “The Guild Guitar Book” by Hans Moust, and “Gruhn’s Guide To Vintage Guitars” by George Gruhn.
Both are excellent references and may be quite helpful to you in both determining the year of production of your instrument as well as identifying specifications and a historical context for the instrument.
If the guitar has been altered, it can depreciate the value of the guitar tremendously.
If you are having trouble finding the date of the guitar you are researching, try emailing the manufacturer and see if they can help date the instrument.