I've got two of the cymbals like the one you posted, and they have both the Pyramid Stamp and the MADE IN ITALY stamp. They are both 50 cm (the UFiP metric version of 20" which is slightly undersized). The bell shape and lathing and overhammering are quite similar.
[img]http://black.net.nz/cym2012/ufip6.jpg[/img]
I've long thought they were 1950s but never actually pinned down a decade. The trouble is that Rob Scott hasn't collected up all the different stamps and eras and done any sort of timeline. And neither have I because I've been putting other work first. I've collected up stamp images and info as I've come across it against the day when I get to it.
I'm not sure if there are documented MADE IN ITALY die stamps (versus ink stamps) on non UFiP cymbals or not. Ink stamps yes, on cymbals like Tosco.
I also have a Pyramid stamp without the MADE IN ITALY die stamp. I presumed this was more like early 60s. It lacks the overhammering and doesn't show much visible hammering at all, has a bell without the very vertical sides, and looks quite different:
[img]http://black.net.nz/cym2017/UFiP1.jpg[/img]
[img]http://black.net.nz/cym2017/UFiP2.png[/img]
Given your information I'm now less certain than I was before about my two overhammered ones being 50s. They could be 40s for all I know. And my assumption was that not having the Pyramid Stamp made my "60s" one later. But your cymbal is evidence that this isn't true. The presence/absence of the Pyramid stamp may not be just chronology at work. Same with the MADE IN ITALY stamp presence/absence. It might or might not be chronology.
You might get more info by emailing UFiP thought their web site. I know a few people have and they were happy to help.