I do have a couple of the Rivarossi cars:
These both came with the "V215". I can only guess they were part of a set (#7000, I believe).
Very pretty, LONG (23 3/8" over diaphragms), and I only wish they had come to me with the interiors.
I find this era (1970s) of 0 scale Rivarossi models to be very nicely done. The locos run smoothly and are very quiet, and the freight "wagons" are also nicely detailed. They are superior, in my opinion anyway, to the Lima line of the same vintage (although the Lima freight cars are perfectly adequate, just a bit less detailed...)
Mark in Oregon