Thanks for posting! I have sort seen that trend as well. I wonder what the future holds for the earlier coupes? I am sure a rise in the cost of spare parts will also be coming soon. Always interesting what the business world thinks about certain cars. My only complaint is that they usually print misleading facts such as the below:
"Bracq updated the car in 1969, and on these later vehicles, the traditional upright Mercedes grille was squared off and lowered for a more sporting appearance, and additional luxury trim—more leather, more wood veneer—was added inside."
The grille part is certainly correct except that I understand it was ultimately done for DOT regulations. But the other? Had more plastic yes, but not more wood veneer in fact less. Leather was the same and not sure about the options. Headrests, A/C and three point seat belts are about the only options I can think of that are more frequently seen on the later cars. However, you can easily update an earlier car with these if you desire. As has been discussed here before, there is also a significant drop in chrome "bling" in the later cars.
Anyway, nice to know these cars are finally getting the appreciation they deserve.
