Asmus Freytag wrote: >> This book is from East Germany. >> It was never written in this way in West Germany. > > And your point being?
Before 1990, a special sort of capital ß has sometimes been used in East Germany, but not in West Germany. https://de.wikipedia.org/wiki/Duden#13.%E2%80%9319._Auflage_%281947%E2%80%931991%29
