Official merch from Phenomena Art and Design, version IV "antique silver/antique copper (2nd color are the details) with stone Light Siam"
"Strictly limited to 100 pieces. No reproduction. Extra heavy quality. Only available in our online shop.
Size approx. 5,5 x 4,5 cm (2,2 x 1,8 inches).
6 different versions. Including a Phenomena-Pin-Card with a picture of the Original Artwork."
Since mine is #227 I am assuming it's 100 copies of each variant (total of 6, so 600 pins?), also they have this disclaimer:
"Please note! The pins are made of zinc. The terms “antique gold”, “antique copper” etc. refer only to the color of the alloy. They are not precious metals. The same applies to the gems used. These are not precious gems."