Gibson Serial -

During this transitional period, Gibson used a confusing system that can be difficult to decode.

Most modern Gibson USA and Acoustic models follow a predictable pattern. Since 1977, Gibson has primarily used an 8-digit (and later 9-digit) system stamped into the back of the headstock. YDDDYRRR (8-digit) or YDDDYBRRR (9-digit) gibson serial

Instruments were marked with serial numbers, often used alongside Factory Order Numbers (FON) , which were internal tracking codes for batches of guitars. During this transitional period, Gibson used a confusing

Before 1977, Gibson used several overlapping and sometimes repetitive systems that make precise dating difficult. During this transitional period