These were produced from roughly the mid-50's later into the 60's. They were a mid grade cymbal ,inferior to the Paiste Stanople. All of the ones I have seen were of some Nickel Silver metal ,cut out of sheet and spun into shape. the hammering is mostly cosmetic. -----BUT like other Nickel Silver cymbals; Zyn,Ajax,Meinl; the right weight in the right size could result in a nice cymbal.I have one example in my vault( this is an unused bedroom in an ancient farmhouse,stripped of plaster, with only lathe boards for walls and ceiling-----it's an amazing 3D xylophone); a 20" Trixon/Stambul, with 4 rivets and it is pretty much a dud, although in fairness, I haven't really given it a real test. This might be an early one. Paiste, were originally Estonian and they moved around a bit ----made cymbals in various places,Russia,Poland,Germany before they settled in Switzerland-----apparently they wanted to come to Canada at one time but you would think it would say : Fabrique en Suisse ?----maybe someone in the plant was a joker.
...whatever...Paiste made an array of NS12 cymbals. This was an early attempt to make it into the hearts of Americans. Paiste makes, and has always made, some of the best intermediate cymbals on the planet. I have some later "German" Stanoples and they really are sweet (same as Ludwig Standards) 14" hats and an 18 ride that someone removed the the rivets from....some say it has affected the sound, but I like it. How would anyone know unless the original rivets were there? Most of these cymbals were hand hammered, as mine are, (you can really see the work) and they look really good. Mine have been abused over the years, but I think it has added to the over all sonic performance of them.
Don't let the proletariat judge your set, use your own ears. That is what matters most, do they sound good to you...? If not, donate them to a deserving kid in 6th grade and buy some stamped bronze..or step up to the plate and spend some money. We have a member, nailfox, that has all the goods at his disposal, to build you all you need, and I have it on good report that he can get you all goods, the way you want to hear them, at a good price. Kevin has done for many what they could not do themselves because he runs the show. If I had the money, I would have him build me a set of pies....I'm broke, therefore I play....what I have. My best cymbal is a 60s Zilco that was donated to my cause by another member. Don't worry, the corresponding cymbal was donated to a student...it's just what I do.