I've been trying to find a thread posted here sometime about 6 months to a year ago with a link to a video on youtube of the D&S sometime in the 80's the begining of the video shows 473 on the turntabe with 497 already on one of the trains. I think it's an old pentrex video but I'm not sure. I've been searching the archives like crazy trying to find this thread but have not suceeded. Any help would be appreciated thanks.