Lionel postwar 6428 United States Mail boxcar production sample. Marked with two medical tape tags on the underside One dated Jul 22, 1965. Car also has archives tag with #6428 (D) mail car R4-U1-S3.
This item will include a certificate authenticity from Stout Auctions and Lionel stating this specific item came from the Lionel Archives. This is 100% bullet proof provenance and is absolutely the best piece of documentation you can get, period.