I have six 57' hoppers I can't identify, one of which I decaled as a Southern Big John hopper. The car only has Austria printed on the bottom, no other ID. It's the spitting image of this: http://www.rrpicturearchives.net/showPicture.aspx?id=272094 I'd like to get a couple more. Thanks for any leads to whoever made this model.
I finally tracked down some on eBay. It seems most were made by AHM, but it seems Con Cor also made some.
