Here's the engine as illustrated in the 1912 Bing catalog
It is listed as Gauge 1. What doesn't match is the engine number nor the tender lettering. The 1 gauge engine on the next page of the 1912 catalog does have 3410 but it doesn't look anything like your engine. Both this engine and the one with 3410 have the same notations concerning correct painting, lettering and lining.