Elkhart Conn 35H Professional alto Trombone with tuning in slide; made in Elkhart 1967; 0.485" to 0.500" dual bore slide; bell is 7"; these altos were build on special order; they are very rare and hard to find; very good intonation and responsive beautifull sound; slide works fine; from Conn in 1966: "a bright alto voice, ideal for symphonic work as well as jazz arrangements"; pics on request; asking 1800.-� + shipping