Kanstul 1670 Bass Trombone George Roberts Model

Kanstul Model 1670 Single Valve, Tuning In Slide Bass with Bronze Bell and Nickel Silver Handslide.  This instrument made by Zig Kanstul, hand picked by a pro player.  is in perfect condition.  Has seen little use outside of the original owners home. Has sterling silver leadpipe.  No service needs to improve appearance or playability. Feels light as a feather and responds very fast with lots of color. Would make an ideal bass for traditional big band or commercial style where a second valve isn't needed.