Finally pulled the trigger on this for $300 yesterday. Rings great, rebound is at least 80%. I am thinking pre-1909. SN looks like 33027 or 33627. I see two "8"s on the same side as maker's mark. The only thing that resembles anything like an inspector's # is maybe a "1"? I used a wire brush and some oil on it last night, but included a pic of it prior to working on it. Any info fellas?