It seems to be a 79 'de ville more exactly, nice sumptuous car
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Please continue here:
germancarforum.com
EDIT
Please continue here:

Sightings - SPOTTED TODAY - Part 7
Continued from previous thread: https://germancarforum.com/threads/spotted-today-part-6.41842/post-957966 All these three cars were on the same parking deck at the Olympisches Dorf in Munich.
