Body of tuba, Besson Sovereign model 995, sn. 899581, Markneukirchen/Watford c. 2005. Lacks valve slides, rotors and mouthpipe, silver plated, some flaws to plating, used as an instruction / practice instrument for instrument makers at Watford (errors marked out in pen marks - circles and numbers 1-4 - and some arrows in red pen cover the body).
This tuba was acquired from the Boosey & Hawkes plant in Watford. It is incomplete and was used in the factory as a demonstration or practice model for instrument makers to master the electro-plating process. This is why blemishes in the plating have been highlighted in felt-tip pen.