This photo has been my Metro white whale. Unfortunately, I forgot to save it in 2000, and it was not available on the internet since. I searched far and wide... and it finally appeared out of nowhere. Titled "LOTHAR MATTHAUS & FRIEND":
04.07.2000.LOTHAR MATTHAUS & FRIEND.ON HOLIDAY IN SAINT TROPEZ, SOUTH OF FRANCE
Maybe I'll suggest it for an upcoming #MetroMonday...