Are we supposing that no NIDs were fitted with the aluminum base pad at the factory? I have seen NIDs with the aluminum pad but don't have any idea if they were original to the gun. My early fifties 20 gauge 37S has the aluminum pad, original to the gun, but the aluminum is covered over with yellowed stock finish (appears factory) that makes identifying it as aluminum quite difficult. Do I remember correctly that the recent available Sunburst pads were available both ways? Were they old stock or reproductions?
