There's a list of serial numbers by year at http://ithacagunrepair.com/page5/page23/
shotgun
what is the value of 12 gauge skb double barrel ithaca 1900 model
The Ithaca model 66 single shot shotgun that was made from 1963-1978 was offered in 12ga,20ga and 410 gauge only.
Remove stock from shotgun
model 37 around $500 in good condition
$600 all day long
You have a Lewis or NIG model, built in 1903.
Made in 1968
The question can't be answered without a sn.
Made in 1949
Made in 1915 - probably a Flues model.
The "R" on an Ithaca 16 gauge shotgun Model 37R denotes that the shotgun has a ribbed barrel. The ribbed barrel provides added strength to the shotgun's structure and helps with aiming and shooting accuracy.