I have acquired a barrell that i think goes to a model 11 rem. The barrell reads remington arms co inc. ilion ny made in the usa and underneath that it sais browning us pats with a bunch of numbers. It is a vent rib barrell 27 inches long and is full choke, it doesnt say what shell size. It has a serial# of 3750, it is for a 20ga. The barrell has a lot of surface rust but no pitting. I was curious if it was worth bringing it back to life via glen rock blue.Thanks for any help you can give me.