So with this in mind, we need to explain how early 1960's cymbals ended up as "new" brilliant types in the early 1970's. Because its very apparent to me at least, that the manufacturing characteristics on some of these cymbals, such as the one I presented here, are very far removed from early 1970's type characteristics. The difference between those two is quite stark and readily apparent.
It would at least appear that they were using some of their older cymbals that were still in stock from their inventory, some from them from as far back as the early 1960's. These likely were used on the first ones made bearing this trademark. They made them into brilliants, stamped them with this new trademark until their older inventory was exhausted, and from that point made new cymbals to continue the series from there. If so then anyone lucky enough to score one of these early releases got a bonus in that these were thinner and better sounding than their later counterparts. And that also might help explain why these thinner ones are rarely seen amongst the cymbals with this trademark taken as a whole. The vast majority of the A. Zildjain & Cie. cymbals that we usually see are plainly machine hammered; top-side hammering only, and are much heavier than the earlier ones. And these characteristics are consistent with other cymbals that were manufactured in that same era. So from that perspective this theory would seem to be the only one that would make some sense out of this otherwise confusing picture. So thanks for providing us with that information.