Washburn MB-4 Mercury series

Year: 1993
Finish/Color: Natural
Made in: USA
Factory/Plant: Currently unknown (Do you know something?)

The Mercury series: 90s high-performance The 1993 Washburn MB-4 hails from the Mercury Series, an era where Washburn collaborated with legendary builders like Grover Jackson to redefine the modern electric bass. This Made in USA model features a beautifully contoured, downsized offset body and a sleek, deep-access neck joint that allows for effortless playability all the way up to the 24th fret. With its high-output PJ pickup configuration and minimalist Natural finish, the MB-4 was designed to be a versatile workhorse for the decade’s emerging alt-rock and metal scenes – offering a faster, more ergonomic alternative to the vintage classics.

Did you know? This specific bass holds a special place in the vault – it’s the one that started it all! Every collection has a “Day Zero”, and this MB-4 was my very first bass. If you look closely at the truss rod cover, you’ll find a quirky relic of its early years: a Chip n’ Dale chipmunk sticker that has survived three decades of playing. Beyond the personal history, the MB-4 is a stealth collectible; while Washburn is often overlooked today, the early 90s Chicago-designed instruments featured build quality and hardware that punched way above their weight class, making them one of the best-kept secrets in the vintage market.

Did you spot it?

Reported sighting: The 1993 Washburn MB‑4 Natural – US-made Mercury Series bass guitar have been spotted.


All about that bass, no treble