Re: Conn or King stencil?
Check the writing on your bell- does it say Elkhorn, Wisconsin? (mine does) This puts the date of manufacture at 1918 or later, at which time Holton was indeed making saxes. If it was from 1911, it would read Frank Holton, Chicago. Methinks somebody's serial number chart is off. Check this site out:
As to value, if you're looking for a money making investment, forget it. If, on the other hand, you're looking for a good horn to play and this one feels right, it's a whole different story!