Paiste MKI 1975 Formula 602 Dark Ride 

975 Formula 602 MKI Dark Ride, 2890 grams
1975 (beta version) European dark ride:
You will notice the hammering is very different from the late '75 and early '76 and later models.
From what we have observed, Paiste was still using the same size tooling (hammerhead) as they did for the standard 602's, the difference is in the intensity (depth) and in the amount of hammering (more dense).
Once you get into late '75 and early '76 (based on serial numbers), you see a substantial change with larger hammer marks midpoint and towards the edge of the cymbal and small hammer marks around the bell.
From picture evidence, we believe this new "two stage" hammering process carried on through to the Sound creation series in 1978 and formed the basic hammering format for a substantial portion of cymbals in that series!
Paiste Formula 602 22" Dark Ride: www.cymbal.wik...