This is not the most attractive set but it is one that is quite hard to find. I found this one in the mid 1990's at a local auction and had to bid against a dealer who didn't usually buy Marx. When I asked him why he was interested he said he wanted the sleeves the cars were in. I told him I wanted the tender and when he told me the red tender was pretty common I knew he didn't know what he was looking at. I told him I would give him the sleeves from the set if he didn't run up the price on me. I got the set for $80! I gladly gave him the sleeves!
Since I turned up this set someone else has found an electric version. Exact same consist except an electric engine and of course
the cars have plastic knuckle couplers(PKC).