HI All,

Is it true that you can identify a mid to late 70's Zildjian A buy the hollow ink logo on the underside only, and then in the 80's they started to put solid ink logos on top and bottom?

Also, I have a few cymbals that i think are from the 60-70's. Some have the 3 dots in the stamp and some do not. Does that signify anything?

Thanks.