Asking for help with KKB stamp

[Seewolf]

Hello to all,

i know now the different labels from uniforms made by the Kleiderkasse but now i have another Fregattenkapitän uniform on the way to me that ihas a KKB stamp.
It´s the first time i see this stamp and wonder now what is earlier: The stamp or the label ?
When i look at the stamp here i would say the tunic is made in 1962. Is that right?

The piston rings are 16mm and 9mm wide....what i expected.