In these cases, obtaining a and having the guitar examined by a recognized expert (e.g., Gruhn Guitars, Carter Vintage) is the only definitive path.

| Resource | Best For | |----------|-----------| | | Quick year & plant identification | | The Les Paul Forum | Expert human verification of odd or vintage Custom Shop numbers | | Reverb Price Guide | Cross-referencing serial with known limited runs |

Used for modern, non-reissue Custom Shop models like the Les Paul Custom or ES-355. CS Y RRRR CS: Stands for Custom Shop.

Genuine Custom Shop guitars almost always include a Certificate of Authenticity (COA) that matches the headstock number. Gibson Serial Numbers

Don’t panic. Gibson’s digital records are incomplete, especially for:

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