Der Nachtportier (3-Disc Limited Collector‘s Edition Nr. 50) [Cover C, Limited Edition 4K Ultra HD, Blu-ray & DVD]
The Night Porter (3-Disc Limited Collector's Edition No. 50) [Cover B, Limited Edition 4K Ultra HD, Blu-ray & DVD]
Not that many copies left - depending on which version you want - now only 2 versions.
Leap of faith on my part - no idea how the quality will turn out. I remember the blu-ray being good so hopefully it's based on the same master (if it was 4k).
Not cheap - but then again that's how things are going these days.