The 1991 Gibson Thunderbird IV Bass is a powerhouse of tone and style, embodying the bold spirit of the Thunderbird series. Built with a solid mahogany body and a 9-ply mahogany and walnut neck-through construction, this bass delivers deep resonance and sustain, making it a favorite among rock and blues players. Its 34-inch scale length and fast-playing ebony fingerboard provide a smooth, balanced feel, while the dual TB Plus ceramic humbuckers ensure a punchy, growling low end with plenty of clarity.

This particular Thunderbird, originally finished in white, has beautifully aged over time, developing a rich yellowed patina and stunning weather checking that adds character and vintage appeal. The gloss nitrocellulose lacquer has worn gracefully, highlighting the bass’s decades of history. Its black hardware, including a 3-point adjustable bridge, complements the aged finish perfectly, giving it an unmistakable road-worn charm. With two volume controls and a master tone knob, this Thunderbird offers a wide range of tonal flexibility, from thick, thumping lows to cutting midrange bite.

A true workhorse with vintage allure, this 1991 Thunderbird IV stands as a testament to Gibson’s craftsmanship, offering both stunning aesthetics and legendary tone.

Specifications

• Body: Solid mahogany wings
• Neck: 9-ply mahogany and walnut neck-through construction
• Fingerboard: Ebony with dot inlays
• Scale Length: 34 inches.​
• Nut Width: 1.5 inches
• Pickups: Dual TB Plus ceramic humbuckers
• Controls: Two volume knobs and one master tone knob
• Hardware: Black finish with a 3-point adjustable bridge
• Finish: Gloss Nitrocellulose Lacquer