I've been around a while, and I have played a few different horns. Of course, it's made in Cleveland which leaves little doubt that it's a King. I'm guessing that it was made in the early 1930's. I don't believe that serial number coincides with Kings list of serial numbers. Most companies used a different series for stencil horns and most serial number lists for stencils are impossible to find. I will see what I can dig up. The Kings were pretty good horns. I have Zephyr baritone and a King Super 20 tenor that are among my favorite horns. They are built very well, and play very well. I like the sound of my Super 20 tenor better than my Selmer Mark VI tenor for jazz and blues. The have a very full, bright sound. Although not worth as much as your Mark VI in terms of value, they are a joy to play, have a great tone, good intonation and a fairly good action for an older horn. I would say that it would be worth the cost of a repad and a little restoration. Definately