Here it is, the likely link between A R Baldwin's "SHM" and Wilmerding & Kellog's "SHM".
A R Baldwin & Co. > Fargo & Co (Wilmerding & Kellog) > Wilmerding & Kellog
Could we consider this a 'new' western whiskey ? Too bad the 1850s and 60s mold makers chose base and shoulder embossing instead of the later full face style ! A.P., could we get a photo of your intact example ?
March 29th, 1867 Sacramento Daily Union
January 7th, 1869 Daily Alta