Technical description: Gold brass with german silver inner slide, garland, ferrules, central portion of the three
stays, valve, outer valve tuning-slide, and water-key. Telescopic outer slide stay. Spring buffers compress by 7mm, shortening sounding
length by 14mm. No main tuning-slide.; Nominal pitch: B?|+|F.; ; ; ; ; Usable pitch: Probably built for use at
A?=|435|Hz.;