Those round rear side marker lights say it's a 1968 or '69 model, as they were added to comply with the Federal Motor Vehicle Safety Standards that went into effect for the '68 model year. In 1970, VW went to rectangular wraparound turn signal/side marker lights in the rear.
I had no idea that the Karmann Ghia has a Virgil Exner connection! Per Wikipedia:
Segre and Virgil Exner became close professionally and personally, eventually traveling Europe together. Peter Grist wrote in his 2007 Exner biography that when Exner in 1955 eventually saw the Karmann Ghia, which cribbed heavily from his Chrysler d'Elegance, "he was pleased with the outcome and glad that one of his designs had made it into large-scale production.” Chris Voss, a stylist in Exner's office, reported in 1993, that Exner considered the Karmann Ghia the ultimate form of flattery. Segre in turn sent Exner the first production Karmann Ghia imported into the state of Michigan, in gratitude..
