Congratulations on getting a great Ithaca!!
I have an NID 28-gauge No. 1 just a bit later. Info I got from Walter thirty-five years ago when I got my gun at Shuman's states it was shipped 04/11/35 to Henry Tharoff. Is that April 11th or November 4th? My gun has the later 1935 style stock and forearm and no cocking indicators.
459536 01 NID No. 1 28-gauge.jpg
459536 03.JPG