Rare views of #60, still in use as the Leadville switcher, as noted by the backup light on the tender. These surprised me, as it is obviously the tender it still has today. Never say never!
C&S records indicate that #60 was overhauled in Denver in April, 1936. I would speculate the Cuckoo Clock headlight was put on at that time. So, prior to April, 1936.