🔎 Historical Perspective
This King 3BF Silversonic Trombone, serial number 495049, was built in the late 1970s and represents one of the most respected jazz trombone designs ever produced. The King 3B and 3BF models have remained standards for professional players since their introduction in the 1950s, known for their clarity, projection, and unmistakable King character.
The Silversonic version features a sterling silver bell with gold-plated inner flare, giving the instrument its famous brilliance and tonal depth. This example has an 8" bell paired with a .508 bore nickel silver slide for small shank mouthpieces. All parts and lacquer appear original, and the trombone shows no evidence of prior major damage or repair. It was in excellent playing condition with strong slide action and classic King response.
From a player’s perspective, sterling silver bells require more energy to fully resonate at 100%, but once mastered the tonal energy is enormous and cannot be rivaled by a traditional brass trombone. The 3BF provides that bright, centered jazz tone with enough depth for section work and pop settings.
Some players historically preferred the straight 3B model, but many professionals favor the F-attachment version for the added low-range flexibility. Being able to reach low C, B, and E with the trigger is extremely useful on tight bandstands where 6th–7th position is not practical. It’s one of those features that becomes indispensable once you use it regularly.
King still produces the 3B today in the Legend line, and new sterling silver models sell for well over $4,700. Vintage examples like this offer the classic sound and feel that made the model famous.
📷 Older Photography Note – SEO Block
These photos on this archive listing come from the early years of The Brass Exchange, before our current fine-art photography approach to brass instruments was fully developed. They reflect the evolution of our studio methods, lighting techniques, and overall process for accurately capturing the color, engraving, and condition of vintage instruments.
We preserve these original images intentionally as part of the historical record of both the instrument and our shop. While more recent listings feature our modern studio photography methods, these earlier photos remain valuable documentation of rare vintage instruments like this King 3BF Silversonic and help collectors and players study important historical details.
✅ Common Questions
What is a King Silversonic trombone?
It is a King model fitted with a sterling silver bell and gold wash inner bell, producing extra projection and tonal richness compared with standard brass bells.
Is the 3BF good for jazz players?
Yes. The King 3B/3BF is one of the most widely used jazz trombones ever made, valued for clarity, articulation, and classic big-band tone.
Why choose an F-attachment on a small-bore trombone?
It adds useful low-range notes and easier alternate positions without sacrificing the classic King jazz sound.
🔧 Availability & Archive Status
This trombone has been sold and is now part of our Archive of Sold instruments. Archive pages remain online as a historical reference for collectors, students, and musicians researching instrument models, specifications, and values.
📌 Archive Reference & Next Steps
Curious what your vintage King trombone might be worth today, or looking where to sell a brass instrument safely? We help players and families every week with honest appraisals, trade-ins, and consignment options.
👉 Contact us here: https://www.thebrass-exchange.com/contact-us
👉 Browse current trombones here: https://thebrass-exchange.com/trombones
This King 3BF Silversonic trombone has been sold and is now shown here as a historical reference for collectors and enthusiasts. 📌
