City of New York as it relates to New York City?
In the North, is is never called the City of New York by anyone who lives there. How many Ships are named New York City? For your edification, it historically was called New York, hence New York, NY.
The ship that was just built with steel from the towers? USS New York? (USS New York City?)
The 5 boroughs have always been very proud of their independence. You would be wise to be careful when in Manhatten vs Brooklyn vs Queens calling it NYC. (that is not a guess)
USS New York City was a sub.
Back to the pintle, of course, as a foundry, they would have put City of New York (CNY) on their product because it is the location of the foundry, rather than their foundry name? One does not find many cast parts of rudders with the vessels name?
Nothing about Castings New York (CNY) in your research, an actual foundry?
How did that help the OP in the ID of the artifact?
If you want to provide a guess, that is fine, just make certain you tell people you are guessing.
By all means, apply for a moderator's job. You seem good at it.
Mods, as you are aware, it is far easier to monitor and approve a posters content prior to publication, than after. If you would like to have me moderate Darrens posts for content and accuracy prior to posting, please PM me.