1958 Gibson ES-335

Gibson serial numbers from this era are ink-stamped on the back of the headstock. Cross-reference with known Gibson serial tables — numbering was not strictly sequential. Potentiometer date codes are critical: look for CTS pots (code 137) with two-digit year codes matching 1958 or up to 18 months earlier. This is the most reliable dating method for Gibson guitars of this era. The finish should be nitrocellulose lacquer showing age-appropriate checking (fine crazing). Under blacklight, original nitro fluoresces a distinctive green-yellow — refinished instruments lack this characteristic. Check for original PAF or patent-number humbuckers — examine baseplate markings, wire colors, and magnet type. The ES-335's pickups should match each other in construction details. Semi-hollow body — tap test (solid center, hollow bouts). Dot neck inlays (most collectible). Verify long-tenon neck joint for this era (correct). Original Kluson Deluxe should be present with no evidence of replacement (no oversized bushing holes). Original hardshell case adds provenance value.