This is either a Bing or KBN (Germany) prewar O gauge train car (tender) with P.R.R. (Pennsylvania Railroad).  The coupler style makes me think its KBN.  Good overall condition, see photos. About 4.25 inches in length.  See my Ives cars and other German (Bing and KBN) prewar trains for sale this week, will gladly combine shipping.  If shipping is less I will gladly refund the difference, just ask. Good luck.