There seem to be a number of variants of Nickel Silver. One of the original uses of the alloy was as an early stainless cutlery metal. I have a number of mid to late 19th century spoons and forks and depending on the alloy, it did indeed have prportions of silver in it. Paiste, Meinl and some Italian makers did use such alloys and there is a considerable difference between the hardness,of the metal,the brightness of tone and the colour of the cymbals.The metal was also used in Ajax, Krut and Zyn cymbals. I have examples of all of these and they are as different as breeds of dogs. The Meinl seem more bronzy, suggesting a higher proportion of copper, Paistes, I would suspect have more nickel, Ajax less nickel. Zyn and the later Ajax cymbals seem harder than the others and have a brighter tone. Aithough , I have seen old Zyns , that are battered and bent , I have one that resists denting, in the extreme so I suspect , that the formulation of the alloys were played around with some. The old Paistes, seem to dent easily. They all seem to be Stamped or Spun and some are machine hammered as well. Some of the 60's Zyn's are very attractive cymbals, both physically and sonically----and I am not talking about Super Zyns, which are a whole other thing. I have seen Sultan cymbals before , cannot remember where but the imprint of the moon and star is very much like that on the old Paiste Stambuls from the 50's----also Dynastar(Paiste). I would be surprised if they were not a Paiste Stencil from the late 40's or early 50's.