S.E. Shires developed the Model 4F in conjunction with some of America's leading orchestral players. It features a special "4" bell taper with a slightly square bell bend, side seam, and French bead. These characteristics give its sound added complexity, cushion the blow slightly, and enhance its projection and power. The bell of the 4F is made with the traditional, longer bend to which many players are accustomed. For some players, this can open up the feel on top of the staff; for others, it improves the attack. Matched with a YEB leadpipe and W tuning slide, it produces an ideal balance of power, warmth, and brilliance. Nickel-silver balusters and valve caps add brilliance and character, increase its core, and contribute to cleanness and immediacy of attack.
- Bore: .462
- 4F Bell: 4 13⁄16 inch, one piece, hand hammered, longer "4" (open) taper standard-weight yellow brass with traditionally brazed (side) seam, French bead, and dual-radius bell bend
- YEB Leadpipe: standard-weight yellow brass; warm sound, open and free-blowing, with easy response and a flexible slot
- W Tuning Slide: dual-radius bend, standard water key; strong core, brilliance, and presence of sound
- Piston Material: hand-lapped Monel
- Valve Cluster: two-piece casings, standard weight, with nickel-silver balusters
- Lower Valve Caps: nickel silver
- Bell Engraving: S.E. Shires makers mark, model designation, and traditional floral pattern
- Finish: silver plate
- Includes S.E. Shires MB style double trumpet case, mouthpiece, and care kit