I bought a NIB Lionel PRR tank car, 6307, and a NIB Lionel Sunoco tank car, 16150. I bought both of them on eBay for very reasonable prices, far below Greenberg's listed price.
The bottom picture is of a Lionel Santa Fe Baggage Car, 19109. I posted it on this thread back on 1/27/23 after I received it NIB. I included it again since I added LED lights and people/luggage to the interior. Many thanks to Jeff from Train Tender who went above and beyond to help me add a roller to the trucks to provide power for the lights.