White is a terrible color for railroad equipment. Although it’s great for those who like to weather models
Its not HO either, an 40ft car in HO is about 5 1/2" ~ this one shows to be 11" or so long. The pizza cutter flanges, couplers all appear to be large scale Lionel to me.
I think there’s an HO one, I’ll look. But I did find this thread way back. http://www.frisco.org/shipit/index.php?threads/box-car-color-question.3579/