'69 Chevelle SS396/4-sp Convertible
 

Looks like an old amateur resto but it sounds as though the seller is the 2nd owner and has paper back to 1970. Not as good as a POP or dealer invoice, and the original engine is long gone, but it does have the CI-code 3.73 12-bolt posi and at least you know that 72 paint was a SS-only color in '69....

Link to 1969 Chevelle SS396 Convertible auction

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https://i.ebayimg.com/images/g/DH0AA...0C/s-l1600.jpg

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