This 891 Triple horn by Yamaha is in phenominal condition. It's reading of a #1 on the compression machine give it a grade A!. Yamaha triple horns are used professionally in some of the top 5 orchestras. Try this one and see why.
Here's some more information on this model:
Hand-lapped rotary valves and slides
Rotary valves and slides that have been hand-lapped are airtight and have smooth action.
Articulated key levers
Articulated key levers have responsive motion.