There were 5 different numbers of the Lionel Smithsonian Hudson. One number was used on the builders sample and is unique. The other numbers were 1 2-rail westbound, 1 eastbound 2-rail, 1 westbound 3-rail and 1 eastbound 3-rail.
There were 500 13 car sets in the Lionel Smithsonian collection; all 2-rail. 250 sets were Westbound and 250 were Eastbound. Fine Art Models also did an additional 500 13 cars sets under their own name. In my opinion they are the nicest passenger cars ever built in any scale, maybe only surpassed by the same cars done in 1/32 scale, also by FAM.
According to the person who has all 5 separate locomotive numbers and is putting together 5 13 car sets to go with them, there were 750 locomotives done. 500 3-rail and 250 2-rail. This person has told me the individual numbers several times when we have spoken but I am not a steam or Hudson fan so that knowledge has not stuck with me.
On a tangent,
FAM also was going to do 500 O Scale sets of the '38 Broadway in Fleet of Modernism but they were never completed. The sleepers were completed. They were the same sleepers as were done for the '38 Century but finished in FoM. The RPO and the Diner, both streamlined heavyweights, were never done. Mr Kohs states there were also problems with the lounge and observation cars that were done but as I have never seen them I do not know what that might have been.
Richard