The Featherlight Deerslayer 12 gauge is a hunting rifle made by the Ithaca Gun Company. These guns are very modern and are worth around 1,000 dollars.
What is the condition of the gun and the barrel length?
1975
1973 - Ithaca Model 37 Featherlight
1972
The Model is "37," with the grade identified by a name (such as "Featherlight" or "Deerslayer") or a letter. Otherwise, it is a Field Grade, either Standard (2 3/4" chamber) or Magnum (3" chamber). I am aware of no public listing of Model 37 manufacture dates, but IDSA Books publishes Ithaca Featherlight Repeaters. They're on the net. However, your serial number denotes a fairly recent manufacture). 1973
1963
Technically they are both "Featherweight", but the Deerslayer had a shorter barrel with rifle sights for shooting slugs or buckshot. It could also be fitted with a scope.
I recently sold mine for $325
100-400 USD
You will need to contact Ithaca. Published sn's do not go that high.
Your Model 37 was mfg. in 1975.
Yes, they did make a 28 guage pump featherlight. I have one myself