Hello, Jan !
Welcome to GDC. If you look back to old posts in this forum you will find much information.
To answer your question, look for:
- Less wear, and even balanced wear
- NO signs of repairs
- No signs of high polishing
- Good fit between dagger and scabbard
- Earlier daggers with the maker's mark, like F. Dick. They are better quality than RZM daggers.
Also, please post all photos, not just the links.
Dave
