RYG/RG. A two-headed automatic distant signal, catenary-mounted signal, with a close spacing between heads of about 6 inches and an excessive-length mounting bracket. This would typically display normal three-block indications, including approach medium used for advance approach. The prototype, which served as the #2 track westbound distant signal to Wayne Junction, had this bracket, which suggests it might have been a 3-head signal at some point.
Updated by CRG.