3rd week of December, 1967. Google says that's the 11-15. It was built at the Ohio Plant.

If what you say is true, maybe they ran out of DS glass for my car, or someone goofed.

I worked at BMW on the assembly line for a few years when the economy tanked, even with computers and in this day and age, we had cars come down the line with the standard black lower trim on one side and the painted "M" series trim on the other. Or black roof rack on one side and aluminum on the other...