You're at least one year out Jim, I first saw them at Coventry Apollo in the Autumn of 1982, I have the programme which carries an ad for the Boogie and there's a photograph of a pair of Hank's specs sitting on top of one of the amps and the caption reads something like 'These fine spectacle stands are supplied by Chandlers" or words to that effect.
So if what you're saying is correct, they had at least eight years of Boogie use? I do remember them sounding great at that time.
I renewed my interest in these amps after seeing The Shadows use them when I saw David Bowie at the NEC in 1991ish and there was a Boogie on stage there. I was having trouble with my Sessionette and traded it at Electro Music in doncaster for a MkIII Boogie @ £1400. It was a great sounding amp, but very, very heavy with the EV speaker and after about five years caught fire at a gig. I had it repaired but lost faith and traded it and went into amp limbo for a while, trying Peavey, Music Man, Fender Twin (again) and settling on another Boogie MkIII head and cabinet, only to get a Fender Blues DeVille before going back to Vox which became a nightmare. This Vox was one of the Anniversary editions with leather handles and rear plaque before Marshall built them. I tried the KCP and moved that on after buying a 1964 Vox which was awesome. It's ironic that after all the money spent I returned to Vox (still have four of them) and have gone back to Boogie with the lighter Celestion single speaker for regular gigs.