Location of the Assembly Plant. 5 – Bowling Green, Kentucky
1XXXXX (Twelfth thru Seventeenth Digits)
Production Sequence Numbers.
The last six digits begin at 100001 and run thru 118595, accounting for each of the 18,595 Corvette Coupes/Convertibles built in 1991. Additionally, the last six digits of the ZR-1 VIN begin at 800001 and run thru 803049, accounting for each of the 2,044 ZR-1 Corvette Coupes built in 1991. Each Vehicle Identification Number (VIN) is unique to an individual car.
For all 1991 Corvettes, the Vehicle Identification Number was stamped on a plate on the inner vertical surface of the left windshield pillar visible through the windshield.
Check Digit is used to calculate the characters in the serial number and gives it a single digit code that can be used to verify the serial number is legitimate. (Note: The Check digit number varies depending on each specific VIN number.)