Francoski rog double-Farkas F/Bb-Bb/F H278ER Holton

F/Bb-Bb/F-Tuning, reversible Separate Bb-tuning slide 468" bore (11,89 mm) Medium throated, hand-hammered yellow brass bell (12.25") Nickel-silver leadpipe (.310") with waterkey Nickel silver inner and outer slides String action Wood shell case Lacquered finish Screw bell 703.556