Brian - I am not positive, but I think you are looking at DRGW Tourist Sleeper No. 460 (1886). It was one of the cars purchased by Mr. Bradshaw in 1983 from the Black hills Central RR. It was last used in work service as part of the Salida Wreck train. It is an interesting and historic car and as I recall, still has some of the original sleeping berths inside.
I bet Dick Bell has some photos he can post as he documented just about everything that was arriving during those early years of the D&S..
Mike Ramsey