Royal Worcester "staghorn" creamer

Approximately 6 inch tall cream uniquely shaped creamer or small pitcher with a handle molded to resemble a staghorn or antler.  embossed design around base.  I have seen these with painting on auction sites, but never plain bone china like this one.  I attempted to identify by the marks but cannot find using the Royal Worcester guides I see online.  Does seem to be after 1861 by the design of the large Royal Worcester trademark though.  Any help in dating appreciated.  

Good