These are not so much counterfeit pieces (because they copy no real pattern), but rather toys. Alas, unscrupuous antique dealers often try to palm these off as "vintage" pieces. They often site glaze crazing as proof of their age, but it more closely reflects that such pieces are truly cheap imports. Apparently made in the 1980's or '90's, they must have been made by the shipping container full, as they exceed the level of common. They truly have NO railroad collectible value, except as toys or to dupe the unknowing.
(Note: The use of the word "counterfeit" to describe this china is not meant to imply that it is "good" or "bad" - for our purposes, the intentions of the counterfeiters are irrelevant. Authentic dining car china was made to be dining car china, counterfeit china was made to look like dining car china. Well done or not, it is not authentic dining car china, and if it is not clearly marked as a reproduction, then it is counterfeit.)