My Pl 521 1600 was manufactured in December of 1969. It has round side reflectors. Yesterday at the Route 66 Reunion car show in Ontario, CA, I saw a photo of a 1969 521 without any reflectors at all on the sides of the truck (rear and front fenders). Was that original? Or, did all 1969 trucks have round reflectors. In over 50 years, I've only seen one other 521 1600 with round reflectors.
My recollection is that in 1970 the 521 changed to rectangular reflectors. Can anyone confirm that?
Also, did the 1971 or 1972 model have rectangular running lights that replaced the side reflectors?