I love reading and learning about this kind of stuff.
The first two are obviously from the 1970's, the Bang & Olfusen is circa 1982.
Weltron '2005' UFO Series with 8 track cartridge .The later '2007' model replaced the eight track with a standard tape player .
The design was inspired by Stanley Kubrick's 2001.
Rosita Stereo Commander Luxus made in West Germany 1974/5.
One of these was up for sale recently at £1.699.
Bang And Olfusen Beocentre 7700.
Very advanced for its time the remote terminal supplied with the 7700 had control buttons for access to all primary recording and playback functions and three digital read out panels which confirmed your instructions every time you pressed a button.