SPECIFICATION: Bore: M-medium Metal: G-gold brass Bell Flare:D-detatchable Lever Action:M-Minibal Rotors: T-titanium Pitch: A-442 Adjust. Fingerhook Flipper The Model 23 was introduced in 1999 and is aimed at the player who is drawn to the Geyer or Knopf style of horn, with its characteristically open layout, immediate response and exceptional clarity in the upper register. Whilst in many respects the Model 23 does resemble a Geyer-type instrument, maintaining some of its best qualities, it is at the same time distinctly a Paxman horn, adhering to the design ethos that has characterised our range of horns for decades. Like the Models 20 and 25, the 23 incorporates the Merewether system which allows the airstream to flow the same way through the valve block on both the F and the Bb horns. As the valve rotors turn in sympathy with the air stream, not against it, so slurs and legato passages are beautifully smooth.