I then found a couple random versions of their dating scheme like here, or here.
I do get dozens of Emails a week thanking me for keeping this information on the web (and you are welcome) and asking questions about older Guild Guitars. If you are thinking of selling, check adds in Vintage Guitar Magazine, or on Guitar classified web pages and see what similar Guitars are selling for.
Unfortunately, some documentation has been lost or destroyed over the years, resulting in some holes in the historical record in addition to a small number of anomalies, inconsistencies and outright dating errors.
Unfortunately, the records of Guild serial numbers prior to 1960 are somewhat sketchy, and so we are unable to assure the accuracy of dating before that time.
The following chart, however, details the best information we have for the approximate last serial numbers produced in each given year before 1960.
There are no corresponding model names or numbers available.
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).
That said, the information compiled and presented here is the most comprehensive data set we have for dating Guild guitars.
Please refer to the notes preceding each chart on how to best interpret the data.
These all seem to list the schema the same way; the model, the date, and the last serial number for that year for that model.