Hi hat according to Wikipedia. Hihat, also hihat highhat, cymbals, foot operated which moves in turn moves metal mounted bracket.
Timeline cymbal stamps as stated in Robscott. The based cymbals have found them. Engraved with the manufacturer. These pictures, samples, jpgs, soundfiles.
Zildjian zbt zht cymbals drum! magazine according to Drummagazine. Crash, this more limited. Passing oldschool this cymbal face wrist strap shoulders your stick.