Measure carefully and let us know.

Honestly, dude. It could be either. We're talking 1/16' difference on a logo that is made up of text, including some that is handwritten. We're not talking about measuring the corners of a box to an exact 1/16. It does look a little more like the early 60's one.

There are a number of things that differentiate cymbal stamps. Exact measurement is one of them. You have a sixties stamp there no doubt. I didn't make the rules. Drumahohic, the man who devised and refined the standards everyone uses to determine when stamps on old Ks and old As were from, is a member of this forum.

I have an Avedis ride, same lathing, same stamp font and I can tell that I see a shapes of regular hammering on your cymbal pictured.

Your hihat is 60's like my ride. But not early 60's. Don't need to bother Drumaholic.

Just got an email back from someone at Zildjian. He had forwarded my email and pictures to a retired cymbal tester. This was the tester's response:

The weight of each of these cymbals officially brings them within the weight spec of a 13” Thin Crash even though they are only a couple of ounces shy of the weight of 13” New Beat Tops. These could have been matched up as hihats within the early sixties before Louie Bellson created the idea of the New Beat concept (lighter top, heavier bottom) in 1965. The lathing style also puts it within that same time frame. As always the time of manufacture could vary by 10 years either way.

I replied with a couple more questions. I will post that as well when a response is received.

I've included a short video for those who wold like to hear these lovelies.

[ame]http://www.youtube.com/watch?v=rG1GpG8FLcY[/ame]

Sound good,but I think you have the clutch on the top cymbal a little too tight..can't move....

"Why choke good sound"..A.Zildjian used to say in brochures...

Perhaps. I just threw them on that clutch and really didn't adjust them. I tend to like them a bit firmer than some, without cranking them down tight. It aids in the footwork.

However, in reviewing your observation, they really aren't that tight and have quite a bit of play. Might be more of an optical illusion.