|C-H Polycarbonate Single Face Head|
This polycarbonate signal with the CH logo was never licensed or distributed by Crouse-Hinds. It's actual brand was Chapel Hill. The signal is a knock-off of Crouse-Hinds' Type R, with additional stiffening ribs and double door latches to accommodate the more flexible polycarbonate material. Actually it is a pretty stout poly signal and the reinforcement ribs on the signal doors have a slight art deco look to them. The lenses are of Lexan with a pattern similar to Econolite's Lexan lenses.
Crouse-Hinds took exception to their basic design being used this way and soon after Chapel Hill ceased production.