Overview Product Description Atlas O Premier CSX scale test car, 3 rail or 2 rail New in original box 3 rail or 2 rail, please specify 5.00 more for 2 rail Typical 1920's era car that was a weight, for calibrating scale tracks. Common thru the 1970's, and a few of them are still around. Diecaast 4 wheel car, as the originals were. crisp Factory paint and lettering Questions? E-Mail us at pdt212@gmail.com or call 805-226-0320 Product Videos Custom Field Product Reviews