The King 3BF Trombone from the 1970s carries the legacy of one of the most widely respected small-bore jazz designs, with the added versatility of an F-attachment. Built with an 8" bell and .508 bore nickel silver handslide, this model could easily transition from jazz combo work to commercial and pit orchestra playing. Its responsiveness and projection made it a go-to choice for professionals in a wide range of settings.
This horn, serial number 482832 (circa 1975–76), featured the distinctive “ropy” engraving pattern admired by King collectors. It retained all original parts and lacquer, with no evidence of prior damage or repair. A full shop service was performed, including a chemical bath and rotor service, ensuring optimal playability. The handslide was noted as excellent, with straight tubes, perfect alignment, and no defects.
Players often debate the merits of the straight 3B versus the 3BF. While many jazz musicians prefer the lighter straight horn, professionals who work in pit orchestras or commercial horn sections appreciate the extra range and flexibility offered by the F-attachment. With the trigger, this trombone extends effortlessly into the lower register, making low E’s, B’s, and resonant D’s and C’s more accessible.
For advancing students, the 3BF represented an ideal first trigger trombone, bridging the gap between straight jazz horns and larger symphonic instruments. For professionals, it remained a reliable all-around tool — capable of blending with trumpet and saxophone sections or stepping out front in solo passages. The 1970s builds are especially admired by King enthusiasts for their craftsmanship, balance, and tonal character.
This trombone included its original case and a Bach mouthpiece, completing the vintage package.
FAQ 🤔
Q: What is the difference between a King 3B and 3BF?
The 3BF is essentially the same .508 bore King 3B, but with an added F-attachment. This provides extended range into the lower register and greater flexibility for commercial or orchestral work.
Q: What is the “ropy engraving” found on this 3BF?
“Ropy engraving” is a nickname given by collectors to the unique bell engraving style used on King instruments in the 1970s. It adds a distinctive vintage character and helps date the horn to this production period.
Q: Why do many players value 1970s King trombones?
King trombones from the 1970s represent a high point in craftsmanship and design consistency. Enthusiasts often prefer these vintage models over modern production for their tonal richness, projection, and build quality.
This King 3BF from the 1970s has been sold and is now preserved here as a historical archive reference for jazz and commercial trombone players. Looking for a similar vintage horn with F-attachment versatility? 🔎 Browse available trombones
