Date: 1936. Owner unknown
What Conn said in 1931:
Because of its light weight, small bore and big tone, this model is the most popular of the baritone horns. It is especially popular with artists who have long and tiring engagements and with junior artists. The Conn light action valves make it easy to play and the smaller bore makes it easy to fill. Its scientific design and glassy-smooth inside surface, produced by the Hydraulic Expansion Process, give it a commanding tone. Many artists have been amazed at the large, round, mellow tone produced by such a small bore instrument. It is also one of the less expensive baritone horns and has been found by a great many artists to meet all the requirements which their playing engagement demands of them.
What Conn said in 1941:
The 64-I baritone has three Crysteel, top, regular action valves. The light action valves make it easy to play and the small bore makes it easy to fill. The design of the mouthpipe entering directly into the valves is a Conn improvement which has done much to improve the intonation and ease of response. Key of Bb.