I am talking about WAF terminology, I don´t know if there is some other. As I know, they are catalogued as they are produced. 1st core was first, 2nd core was cheaper pendant in the same time (that´s why always seen in alloy) and third core was used during third reich.
PS: I don´t know if you see the photo of obverse, because I don´t, but when I want to edit the post, photo is there.