This is a 20" cymbal I got from a guy locally who bought it on eBay. I don't have a picture of the stamp--sorry.. I am able to take more pictures of the cymbal itself if needed. The hole is smaller than newer cymbals, so I'm guessing it has to be at the latest from the 50s. It weighs 2098 grams, has a nice flutter to the edges when played, crashes well, has decent stick definition. The surface has what appears to be a good amount of small somewhat uniform hand-hammering, both on the top and the bottom. Also the bell is flatter on the top and the bell arcs up somewhat abruptly from the flat part of the cymbal to the flat top of the bell. The alloy is definitely B20 and I think it looks like an Avedis Zildjian but I see no engraved logos on it anywhere. It was apparently originally owned by a professional drummer in the Boston area, which makes me think it could be a Zildjian but with no logo, I'm asking for the sharper eyes on this forum (Bill?) to be able to make a determination, as only some of these eagle-eyed experts are able to determine the make of a cymbal according to factors other than the stamp, such as lathing shape and pattern, cymbal shape and bell shape, etc.
Does it look like a cymbal you may have that has a stamp on it? Any comments and or info/observations are highly appreciated. I have ideas about what it may be but I'm reserving commentary for later, hoping that someone my have some good comments. Please, even if you don't know what you're talking about, feel free to chime in.. Thanks!