Originally Posted by miamijim

Royal Blue. There should be a date code on the RD cage and another on the handlebar (if its the original steel bar) Pre-1970 as the head and seat tube badges with change from the triangle style to the rectangle/square style in '70. But, as with everything Peugeot there are many exceptions.

Considering the crimped chain stays I wouldn't hesitate to tap and modify the RD hanger