JC Higgins Model 20, 12 ga. slide action shotgun.  Serial #NSN.  Good condition.  Sears Roebuck catalog shotgun.  2 3/4" chamber, listed as full choke on barrel, however, the 18" barrel has been cut down from its original length and is now something less than full.  The bore is very good.  90% matte blue re-finish with most of the wear on the magazine tube.  Clear coated lined wood forearm is very good and smooth stock is good with a 2" light crack on the left side at the receiver.  Black lined plastic butt plate and sling studs.  13 1/4" LOP.  C&R OK.