need some help with id this size 3/o
pocket watch I think is New England Watch Co.
but want to be sure.

Two thiings verify it is a New England Watch Co product (VERY Nicely finished!);
The N.E.W.Co. engraved on the movement
The Duplex Escapement (N.E.W.Co. was formerly Waterbury W.Co. who produced the first USA-made duplex escapements).

Try to read the name of the movement. It may be quite rare in that size.

L@@K at that nifty regulator!

looks to be queen mab so rare is out the window
but runs good