The 470's and 480's were all built with train number boards. The D&RGW never put train numbers on them. They always simply had the engine number in them. In the mid 1950's they began to be removed. By 1960 or so, all the engines in service had them removed. Some of the out of service engines kept theirs. On the C&TS the only engines that kept the number boards were 482 and 489. Both of these engines were retired by 1960. 482's went on the 484 in the mid 1970's. 489's got installed on 488 when that engine was put in service in 1979. When 484 got set aside for major work in 1980, it's number boards were placed on 489, where they remain. In the 1990's John Coker had a set made over in Durango for 484.
All the number boards on engines in Durango were put on by the D&S. The sheet metal shop that made them for the D&S made the ones for 484.