King 3BF Trombone with F-Attachment – SN 703897 (Early 1980s)
This vintage King 3BF was made in the early 1980s and features the classic .508" bore with an 8" bell and nickel-silver outer slide — the same specs as the standard King 3B, but with the added flexibility of an F-attachment.
It has just received a complete shop service here at The Brass Exchange, including a full once-over and chemical bath. The instrument is in super clean condition with no dents or dings. The bell is very straight, and the handslide action is excellent with no loss of inner slide plating. This horn is 100% performance-ready — no additional service needed.
Ideal for jazz and commercial players, the 3BF is especially well-suited for horn sections, wedding bands, and pit orchestras. The F-attachment enhances low register access, adding warmth and punch when you need a big, fat bottom end. For students upgrading to a first pro-level horn, this is a smart, long-term investment that’s easy to play and versatile in tone.
A new King 3BF currently retails for $3,699. This vintage model delivers professional performance at a much more accessible price point.
Mouthpiece not included.
Q: Is the King 3B with F attachment still a good trombone?
A: Absolutely. The King 3BF remains a top choice among jazz and commercial trombonists who want the familiar 3B feel and sound, with the added range of an F-attachment. Vintage models like this one from the early '80s are especially sought after for their craftsmanship and playing characteristics that many musicians find superior to current production models.
This listing now resides in the Archive of Sold Instruments on The Brass Exchange and remains available as a reference resource for trombone players researching vintage King models, specs, and performance history.
