This factory manufactured second variation trigger guard is for the Iver Johnson Knox - All Sporting Goods Co. hammerless double shotgun in 12 gauge and is in very good condition exhibiting a grayish brown patina with light wear.  The trigger guard screw hole is set back to the rear further than in the first variation.   (file photo)

Note: Iver Johnson shotguns with the following serial numbers have been observed with this part:

12 gauge: 184436