Is this 1977 Chevrolet Chevette the rarest COPO ever?

This 1977 Chevrolet Chevette was purchased new by an employee of Chevrolet Central Office back in 1977 as a genuine COPO. Packing the venerable Opel sourced 1.6L 4-cylinder backed by an automatic transmission, this exceedingly well documented Chevette has less than 5,000 miles on the clock and is up for auction via Mecum >