C&S Headlight Number Boards

[Robert McFarland]

Several Otto Perry photos  of C&S engines taken about the late teens or early twenties show an angled number board on top of the headlight lens in addition to the one on the side of the headlight.Could somebody please shed some "light " on when this was used and why?

[Keith Hayes]

Surely this was to comply with the USRA requirement for train order boards?

Keith Hayes
Leadville in Sn3