Was wondering the value Ithaca featherlight model 37 12 gauge with a 18 vented rib barrel finished in a satin nickel serial 371645518 can you tell me approx value it is in near new condition?

That gun was made in 1978. It would probably bring $350 - $450. If you mean it has an 18 inch barrel, it may be a law enforcement or military model, and would probably be worth a little more to a collector.