If the gun is in very good condition it would probably bring between $350 and $500. Watch the auctions at www.gunbroker.com for comparables.
1973 - Ithaca Model 37 Featherlight
it was made in 1971.
1976 is the year
Depending on its condition... and if it have engraving,90-98% with no ingraving in the magezine would bring between $250.00 and $500.00..depending on where it was sold..
The serial number indicates your gun was manufactured in 1966.
Made in 1972. Probably worth about $350.
Depends on the model and condition. An Ithaca Mdl 37 Featherlight in 16 g in excellent condition is $500-$600 at retail.
Your Model 37 was mfg. in 1954. The -4 indicates full choke.
I have seen them selling for between 250-325 dollars depending on condition and a good bore.
In order to answer this question one would need to know the model number, serial number (not essential, but helps date it), and its condition. If it's an Ithaca, as opposed to an Ithaca SKB, it would be a Model 51, and probably worth in the $300-$400 range.
http://www.diamondgunsmithing.com/index.html
The serial number indicates your standard-type Model 37 was manufactured in 1953.