Conn 18H Coprion Trombone – Refurbished, Custom Brushed Finish 
This Conn 18H Copper bell Coprion trombone. It has been professionally serviced including: a chemical bath to remove calcium deposits, large dent removal, inspection of all joints, and slide alignment. The slide is “very good” with little whisper, the inner slide is in great shape with almost no plating loss (please see photos) I’d rate the slide as 8.5 – 9 out of 10. There are a few small dings and scratches throughout, including a small dent on the handslide crook, which won’t affect the playing. 
The original lacquer has been removed and a brushed finish has been hand-applied instrument is unlacquered so you will occasionally need to polish it. 
The instrument has been play-tested and sounds great, dark rich tone with great resonance. A wonderfully responsive jazz horn.