📚Historical Reference
This late-1970s King 3B Silversonic trombone (SN 669226) is now part of our Archive of Sold Instruments, preserved to represent the peak of King Musical Instruments’ craftsmanship during the H.N. White transition era.
✦ Historical & Model Overview
Built in the late 1970s by King Musical Instruments, this 3B Silversonic exemplifies why the model became a top choice for jazz, big band, and commercial trombonists. Featuring an 8-inch sterling silver bell with gold-plated interior, it delivers exceptional projection, tonal depth, and warmth. The .508″ bore nickel silver slide with yellow brass end crook provides smooth action and precise response.
Every component on this example is completely original—lacquer, bell engraving, and hardware remain intact and remarkably well preserved. The horn arrived at The Brass Exchange requiring no mechanical or cosmetic service. Even the original King case remains clean and fully functional.
We’ve seen and sold dozens of 3B Silversonics over the years, and this one stood out immediately. The resonance is effortless and balanced, with the sterling bell producing a tone that continues to open and bloom the more energy the player gives it. From a pro player’s standpoint, once mastered, sterling silver bells generate enormous tonal power and nuance that traditional brass cannot match.
✦ Performance Character
The King 3B Silversonic has long been associated with the great American jazz sound — compact, brilliant, yet full of color. This example’s combination of sterling bell and gold inner flare yields an unusually rich tonal palette: warm, buttery mids with commanding upper overtones. Whether played acoustically or through a microphone, it offers clarity and presence without harshness.
During the 1960s through the late 1970s—and even into the early 1980s—King continued to produce some of the finest Silversonic trombones in the world. This mint 3B represents that lineage perfectly.
✅ FAQ
Q: What distinguishes a King 3B Silversonic from a standard brass 3B?
The Silversonic features a sterling silver bell with gold-plated inner flare, producing a uniquely vibrant tone. It responds differently from brass—more energy is required to reach full resonance, but once engaged, it delivers unmatched tonal power and brilliance.
Q: Were there variations in King 3B production through the 1970s?
Yes. By the late ’70s, manufacturing shifted under King Musical Instruments ownership, but core design elements—bell alloy, bore, and slide geometry—remained consistent with the earlier H.N. White models.
Q: Did any famous players perform on King 3B Silversonic trombones?
Many of the world’s leading jazz and studio trombonists favored the 3B Silversonic, including J.J. Johnson, Buddy Morrow, Steve Turre, and countless members of major big bands throughout the 1960s–1980s. Its balance of brilliance and warmth made it a standard among professional players.
📌 Archive Reference & Next Steps
This King 3B Silversonic has been sold and is now displayed here as a historical reference for collectors and players studying vintage King craftsmanship.
Looking for a King 3B or Silversonic trombone in stock?
👉 Browse available trombones
Considering selling or consigning your own King Silversonic or looking to determine current market value? We can help.
🔎 Sell or trade your trombone














