"ISPorter Utica H" ?? Coin Serving Spoons!

[Tipton444]

I got an incredible amount of large coin silver serving spoons, and need help with identification. I have 4 different makers, and about two pounds of silver. I know you are only supposed to list one item per listing, so I'll have to make a couple (please help with others as well!). These 4 are marked ISPorter Utica" with a small H hallmark. Any idea where these are from exactly? I figured I'd check on these names, since I couldn't find them in a regular search result. Any extra information would be incredibly appreciated, thank you all!

[Francais]

Joseph Sewall Porter, Utica NY.
http://freepages.genealogy.rootsweb.anc ... versmiths/
Maurice

[Tipton444]

Thanks again Maurice, you are the best!