American coin silver dessert knives, "Kings", John Stevenson, Pittsbu

These dessert forks are 7 1/8" and in nice condition. There is slight tine wear but not excessive. There are no dents or bends and the pattern is crisp. They all have the same monogram but different signatures. Two are marked John Stevenson of Pittsburg and the thirs is marked Wynn and Baldwin, whom I can't find but are probably from Pittsburg also. Ca 1850. The signatures are decernable but worn, hence no picture.