Description First up is the tin litho Santa Fe AA #21 and a few tall truck box cars. Next is a British Marx passenger set. Somewhat hard to find, especially on this side of the pond. Last is a long string of tank cars. This is mostly Marx 3/16 scale with a few New Marx/Ameritrains units and a couple of custom ones for a total of 40 tank cars plus a caboose. Motive power is a modified Marx 1829. It has a K-Line running gear and lots of extra weight added for traction. A real slick runner with a lousy smoke unit.