Will try to get some good legible photos posted. It is gauged at 118.35. I was 'assuming' a proof house date based on 2 lines of numbers 305 above 471. I read somewhere that this could indicate March of 1905 and 471 being the number of the entry into proof house records that month. Not true? I am learning. All the marks are appropriate for the 16 Ga barrels and the rifle barrel but no markings indicating 'Nitro' proofed. I will get to the photos tomorrow and post them. The drilling is in beautiful condition and tight everywhere. I would truly enjoy figuring out how to safely shoot this beautiful gun.