Sorry, but I'm not really an expert on mid-1970s Blaupunkts.
I can tell you the following facts....
It has a 1968-73 VW Blaupunkt/Grundig faceplate designed for Emden III, Wolfsburg, Ingolstadt and Braunschweig models- but it isn't any of those.
The typeface used on the dial screen is 1972 or later.
The pushbuttons would have originally been black but have been replaced with pre-65 style buttons.
It's a European model and it's not a VW accessory radio.
Not sure which model it is (probably identifiable by the uncommon MMUUU presets).
Hope this helps.
Rich.
47 Beetle, 56 UK Karmann Cabriolet, 56 UK Beetle, 57 UK Type 2, 59 UK Beetle, 66 UK Fastback.