From the 1957 Conn Instrument Catalogue:
Popular among powerful players where great volume and power are paramount. Features [medium large bore] for especially fine performance and intonation in the top register. Crysteel Airfloat P-27 slides...long slide bearing for smooth 6th and 7th position performance. Outside slide of special Conn bearing formula alloy.
What is most impressive is that after so many decades of use and playing, this trombone continues to produce a beautiful and well rounded sound that can shift from Brahms to Booker Little in no time. Whether you’re a student looking for their next horn or a pro who needs a horn that will shout above the trumpets, you’ve got the right horn in sight. Why work harder for the sound you want if you don’t need to, right?