The s/n location on Carlo's is different than my '77, (like the auction) weren't some produced in Nashville and most in Kalamazoo?
Not that they haven't always been all over the place QC, but wasn't this about the worst time?
My others are a '76, the green one which *had* a decal and the purple one which likely was a '76 too since it also had a decal, tho I thought I'd heard some '77s had them as well.