Has anyone heard of medal makers Noble & Benton? Perhaps they marked medals N&B.

There are newspaper reports that "Noble & Benton, Exchange Place", made three large silver medals that were presented December 1852. I do not think they were in New York City, but someplace in upstate New York. I am not sure if they worked in Rochester, NY, or Syracuse, NY, although Rochester city directories are online and I do not see them there. There are Exchange Places in both cities at that time.

The silver medals are reported "of very fine workmanship," "very handsomely finished up". Noble and Benton "whose skill have before attracted notice." The 1852 silver medals have a low-relief locomotive and tender and wreaths on one side. The other side has inscribed names of 28 presenters. Presenters and recipients were all associated with Rochester & Syracuse Railroad and/or Auburn and Syracuse Railroad.

I came across Noble & Benton whilst researching one of the medals' recipients. I have not seen the medals; I've only read about them and their manufacturers. I cannot find Noble & Benton candidates in the census - or anyplace. I've tried different spellings, and even thought of Toronto. Thanks for any help or thoughts.