Kruspe 2 DSC_0006 DSC_0008 DSC_0007 Kruspe 6
Single rotary valve horn with changing crooks
E. Kruspe, Erfurt (D) ca 1890

Typical example of a late-19th century valve horn. Design of the valves and valve tuning slides is visibly developing towards the modern pattern, however bell flare and bore are fairly different.
This horn can still be used with (some) changing crooks, by the turn of the 20th century this fashion changes to the use of fixed leadpipes. A nice item is the spring and lever mechanism. the hight of the levers can be adjusted individually. The bell is made from thin sheet metal, together with the large flare this results in a warm but compact sound.
this Kruspe probably dates from the era just before the invention of the double horn by the same manufacturer.
The completely ruined original horn received a thorough restauration by Daniel Kunst in 2009. The original F-crook of the instrument was so rotten it was replaced by a replica. Since its reconstruction this fine horn was used in several orchestral and chamber music projects.