The valve section of this instrument is quite heavy. It is very awkward to put in a "rest" position. First chance I get, I am going to get a stand for it. The brass seems to be much thicker than the bell section part of the instrument. It plays SUPER sharp with the slides in the normal position. I suspect it may well be a B/Bb trombone but is missing the extra Bb slide. It sounds ok with the slides pulled way out. I am going to look into having a slide constructed so that it can remain in it's pulled out position. One also risks getting slide grease on clothing with the slide out that far. I have not tested it with a tuner, but I think it will be fine. The bell section has decorations on it reading Medaille 1st CLASS PHLADELPHIA LONDON & PARIS SAN FRANCISCO AMERICAN INSTITUTE CS MISSENHARTER MAN'R NEW YORK 6983 KOHLER & CHASE SOLE AGENTS FOR CAL. There is also a large horse shoe and flowers and leaves on the bell as decoration. It is inscribed Missenharter NY on the second valve.