I have 2 20 inch 1960's Vintage Avedis Zildjian Ride Cymbal. The one cymbal may actually have the stamp from 1940. I have taken pictures of the stamps and cymbals. I am looking to sell the both so I can get new crash cymbals. They are in great shape. If you are interested in buying them please shoot me an email and I will forward you pictures.
Thanks,
jeffngina242@verizon.net