Nice. That is a bit nicer than the others I've seen. Unusual that the engraver put the quail on the left side between the pins, but the snipe/woodcock on the right side above and in front of the front pin.
My gun serial number 63 only has two patent dates Aug 7, 1883 (No. 282,429), & July 17, 1888 (No. 386,174), and three screws in the trigger plate.
63 05 12-ga American Arms Co. Whitmore left.jpg
63 08 Patent Dates.jpg
By serial number 421, there is a third patent date July 29, 1890 (No. 433,262), and a fourth screw in the trigger plate.
421 01 right.jpg
421 02 Bottom.jpg
Serial number 643 is perfectly plain with no engraving and Twist barrels.
643 03.jpg
My gun has a plain checkered butt plate. By 421 they were using the Bluffton, Ala. butt plates, even though on the ribs they are still marked BOSTON.
421 04 butt plate.jpg
643 09.jpg
Threaded Mode