The B&O Musem had a batch of reproduction IC Cromwell silver flatware produced (along with silverware from other RR's). The telltale sign is a large number "1" or "2" stamped midway up the back of the handle. These reproductions fool many. As of this writing a long time dealer is selling just such a spoon, and it is "guaranteed to be old and original", which of course, it is not.
(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.)