The Cymbal Book say Zilciler was first. That translates to "cymbalsmiths". Zildjian sued them. The result was a cease and desist order on both the Zilciler and Zildjiler names because of their similarity in spelling to Zildjian. I suspect that they were at least as much displeased with the actual appearance of the stamp font, which was exactly the same as Zildjian was using. Some of the Zildjler cymbals were ink stamped with the Zildjian style script, and others had the name ink stamped in some ersatz Arabic script. This was not the related to the genuine Arabic script as was traditionally used on the old Turkish made cymbal trademarks though.