N.S. Co. Inscription

[raab1885]

I know that Norton and White uses the initials "NSC" but what is the "N.S. Co.?"
Also, any ideas about the inscription "KOA '37?" It is on the base of one of the goblets but does not have the "N.S. Co." inscription on the bottom.
Thanks
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[2209patrick]

Can only offer a couple of possibilities.
Newburyport Silver Company, Keene, New Hampshire.
National Silver Company, New York City.

I think the mark was used by the National Silver Company, but have not been able to confirm that.

Pat.