King LIberty Trumpet 1954-1955

I inherited this. I may want to sell it as I yet have no idea of it's worth. It is in extremely good shape, with no visable dents. The valves work as they should, as well as the slides & water valves. The case is is Minte condition, and it also contains 2 mouthpieces and a lyre. There is an average amount of tarnish around the hand places, but very less than average.