For sure a 1930-40's 11" Paper Thin Zildjian Splash... Purchased NOS discounted only in the early 70's from a long time Sydney Piano/music store.. (purchased by a "green around the gills" me).. Only a few years back I discovered (Via VDF), it's true worth...
Cheers
John
Here's the original link to my posting...
http://www.vintagedrumforum.com/showthread.php?t=53314&highlight=11%26quot%3B+Splash