From about '68 to 73", I had a pair of 14" Zildjian hi-hats, I played them a lot in high school, college, and gigs. There were not today's variety of models offered back then. Just "14" Hi-Hats" was stamped on the top cymbal. I could tell the weight of the top cymbal was thin, but not too thin. I was never a heavy-handed drummer, but in the last year I had the pair, the top had lost all of its grooves, and became shiny; almost brilliant, by today's standards. Also, the sound had changed from musical to my mom's frying pan lid! I didn't think they sold just top hi-hat cymbals back then, so I traded them in for a pair of New Beats. I'd like to hear your story. Did your cymbals change that drastically over time?