The Erie Railroad's class N-3 Mikados rolled off the Baldwin erecting floor in 1923. They had 63-inch drivers, 200 p.s.i. of boiler pressure, and cylinder dimensions of 28x32 inches. Their evaporative heating surface was 3828 square feet, their superheating surface 1026 square feet, and their grate area 70 square feet. With a locomotive weight of 343,480 pounds, they exerted 67,698 pounds of tractive effort. No. 3187 appears here, date and location unknown, in an image from the Wayne Koch collection by an equally unknown photographer. The separate exhaust pipe next to the stack suggests the presence of a booster engine, for additional power when starting, in the cast steel trailing truck.