I found 2 salt cellars by Gorham that were very similar to Elizabethan Era salt cellars, but I can't be sure they were meant to be paired with these spoons. I get the impression that these 2 salt spoons were custom made and so there really should be a matching set of salt cellars out there somewheres.
I have seen Gorham silver plate seal-top spoon reproductions, but never in sterling silver and never so early (Circa 1875 based on my interpretation of the Lion-Anchor-G hallmark style).