Very nice example. Congratulations!!
That is the 1935 and later shaped beavertail forearm. If you can, could you post a picture of the forearm loop on the barrels and the inside of the forearm? I see it doesn't have cocking indicators. Ithaca "officially" dropped them during 1935. So far I've only recorded three of the Magnum-frame NIDs with indicators, the Capt. Askins/Elmer Keith gun 500000 a No. 4E --
500000 05.jpg
a Field Grade serial number 500114 --
500114 01 Field Grade, 10-gauge, 32-inch.jpg
and a No. 1 serial number 500223 --
500223 01 No. 1, 10-gauge, 32-inch.jpg
I've recorded quite a few in between these three without indicators.
Gotta love that Snipe and Quail on the sides of a No. 2 no matter what gauge it is. My 28-gauge and Super-10 No. 2s --
No. 2 NIDs 02.JPG