There could be others but I would guess highly unlikely.... and these days with so many fakes out there it would need bullet proof documentation, etc... and a complete detailed inspection review by the best in this hobby.
Also note this was a very late VIN car and Jerry states in the cert this is the only one he and other Camaro experts have ever come across...
it is possible, these cars were built by humans,
ha ha ha and I would bet the line never stopped during production even if they discovered they had made an error....
JOE