Not sure about the theory concept Vin. The stamp shown is generally considered a 70's stamp. The hollow ink logo on the underside is also thought to be late 70's/early 80's. All the hollow ink cymbals that I've owned or played sounded great. Those look nice.

Mike

How about the absence of the three dots on the sluggish "U", Mike?

Interesting conundrum. They look like 70's stamps and the lathing/hammering looks right for the ghost logo period, but I've only seen that type of stamp on one other ghost logo period cymbal.

I have a 22" Ghost Logo Swish that is stamped "Medium Thin" in generic looking font, and then "Swish" in a different part of the cymbal, in equally looking generic font. I can take photos if you would like to see it. I'll also check the to see if the three dots are there or not.

Vin-the 70's stamps don't have the three dots. They look much like the 50's stamps with some differences. The big telltale sign is the non vertical alignment in the h in Turkish over the e in made.

http://black.net.nz/avedis/avedis-gallery.html

Mike

What Mike said.

Those are what we refer to as "70s", although that style of die stamp and the "ghost" Zildjian (love the terminology) didn't stop at midnight on December 31st 1979 and didn't start on the 1st of January 1970. The decade names for eras are a convenience for discussion, but changes don't happen exactly on the decade.

In addition to the vertical alignment, you'll see the die stamp doesn't have a bold Zildjian compared to the Avedis. The late 1950s small stamp does have that bold Zildjian.

Those fit the hammering and lathing style of the "70s". I don't discuss it in depth (yet) but you can see the hammering example on my 60s New Beats scrolling down here:

http://black.net.nz/avedis/new-beats.html#NBtop

This is the concentric rings with small round hammer marks I'm talking about. You'll also be able to compare that ink TOP HI-HAT with yours and see that it isn't in the 30s to 50s style. It has the less "basketball player" style of the later eras (not so tall and skinny). I don't yet know when it changed, but post 50s on present evidence.

Here is an example of the earlier ink style which goes right back to the 30s:

http://black.net.nz/avedis/avedis-gallery.html#first

The whole thing about the 70s stamp being hard to tell from later 50s small stamp, and there being "old cymbals" which were stamped in a later decade are the result of internet myths which persist. Yes there are some anomalies to sort out, and new evidence coming to light all the time. But nothing which really questions the original work done by Bill Hartrick. It's just that most people use the bogus imitations of Bill's work which are out there on the interwebs.

Although I've directed you to my brief history of New Beats (for the pictures) I don't think those are New Beats given the weights. The top could be a New Beat top in terms of weight. The bottom could be an unusually light New Beat bottom in terms of weight. The bottom could comfortably be a New Beat top as well! But that pairing would be very unusual since the weights are that close. The top isn't inked as a New Beat top, but again that doesn't tell us anything with 99% certainty. It could be a pairing that was chosen at the factory because it was nice (was it Leon Chiappini who did all the sonic matching?). They weren't matched just using a scale, and the pairings do vary quite a bit. Leon is a national treasure: https://www.namm.org/library/oral-history/leon-chiappini

Hope this helps.