Very nice special collection SHS and NDK in the ring binder accommodated with 51 different varieties and trial proofs, all with photo certificates respectively photo attests Zrinjscak BPP. All issues in outstanding mint never hinged condition respectively few values as issued on ungummed paper. As well unperforated issues, colors samples, passer shiftings, double impression and so on. A magnificent object, whereby alone for the expertize costs approximate 350,- Ç were invested.