Yes they would have been factory installed up to late 1967 all cars depending on supply/demand and assembly plant location.
New Federal Laws in 1968 required wiper blades and arms to be "anti-glare" and tha Air-foil blades like you are showing were not factory installed.
Yet they could be bought as an aftermarket replacement at any gas station,etc..
Nigel and his team at National Moparts has a HUGE selction of NORS replacement wiper blades and refills including yours so give them a call!! (I know 'cause I saw them and bought some)
https://nationalmoparts.com/Hope this helps