Very nice bug. Can't see the front end, so I can't be sure whether or not it's a SuperBeetle. The rear light lenses suggest it's 1970-72 vintage. (I had to consult John Muir's running account of model changes in How to Keep Your Volkswagen Alive—A Manual of Step-by-Step Procedures for the Compleat Idiot . My copy (November 1980) was the 24th Printing, Fifth Edition (not a bad run between the first printing, in 1969, and who-knows-how-many in toto).)
From Steve: <I fancy a sort of 60's pale green/grey or duck egg blue>
I do, too. My bug is the 1966 VW color called "Bahama Blue," a blue-green that changes its apparent color according to the light, and sometimes looks like an aquamarine. (VW resurrected this shade in 2005 for the "New Beetle," and called it "Aquarian Blue.")
In 1967-68, VW's blue was more a Sky Blue/Robin-Egg Blue. In North Carolina this shade is called either "Tarheel Blue" or "Infantry Blue," depending on one's affiliation.