For many vintage instruments, determining the date of manufacture involves little more than running the serial number through a reference guide.
Whereas Martin guitars have been using a single, consistent numbering system since the 19th century, Gibson has used several different serial number formats since its inception in 1902, meaning that some formats and numbers overlap across decades.
This makes it especially important to first identify the general era during which your instrument was made before pinning down the exact date of manufacture with a serial number.
If you know the backstory around when the instrument was purchased, this can provide some rough clues about its era.
The block logo debuted after WWII and remains the face of the company.
There were minute changes to which letters were connected in the font between 1961 to 1981, but the main logo had the same look.
Note: Custom shop guitars are not supported The Gibson Serial Number Decoder currently supports 6 formats from 4 Factories.