If this helps, the serial number is 117XX that puts it later in production run. The Remington Society article talks about a shift in features of grade levels at the 10000 mark.

http://www.remingtonsociety.org/remington-model-1882-shotguns/

If it means anything, the barrels are each stamped with a 4 between hinge and forend hanger lug.

The serial numbers all match. It gun shows no sign of being taken apart.