How do you tell if Mercedes Benz 1997 S 500 has bulletproof windows?

To determine if a 1997 Mercedes-Benz S500 has bulletproof Windows, check for any manufacturer markings or labels on the glass that indicate ballistic protection, such as "VR" or "VP" ratings. Additionally, inspect the window thickness; bulletproof glass is typically thicker than standard glass. If available, consult the vehicle's documentation or history for any modifications or upgrades related to armoring. Lastly, contact a specialist in armored vehicles for a professional assessment.