D&H blue flatcar / wheel car #15961

I came across a photo here (http://www.trainweb.org/dhvm/images/dhr ... 961-01.jpg" onclick="window.open(this.href);return false;) of a blue D&H flat car with some wheels on it. The car looks to be freshly painted. Does anybody have any more information about hti car? I would like to build a model of it but have no idea when it might have been painted blue, what era it is from, etc.

Also, anybody have any other pictures?

Thanks.