I recently seen in the HideHitters that actually K Zildjian Istanbul has an open script logo similiar to hollow ink logo Zildjians.
Here is the description and pictures from HideHitters:
Here's a seventies open ink script logo on a K.Zildjian cymbal, Made in Istanbul, Turkey. Somebody tried to polish it off, but still visible.
[IMG]http://www.hidehitters.com/cymbals/Zildjianstamps/scriptK.jpg[/IMG]