I just reacently traded in my first shotgun witch was a NEF Pardner Single - Shot 20 gauge ( I'm 13, I got the gun when I was 10) for a Mossberg Model 500 20 gauge.  It is a very nice shotgun, after the trade in it only cost me $60.  On both sides of the reciver, a pheasent and duck are engraved into it.  I'm wondering if it is some sort of a special edition gun or something.  The gun is used and im wondering what year it is.  The serial code is 6376245.