Before buying a vintage Citizen automatic watch, examine the movement carefully to ensure it winds smoothly and keeps consistent time, and ask whether it has been serviced recently. Inspect the case for dents, over-polishing, or corrosion, and check that the dial and hands are original, as refinished dials can reduce value. Look closely for signs of moisture damage such as rust or spotting. Test the crown to confirm time-setting and date functions operate properly. Assess the crystal for scratches or cracks and consider the condition of the bracelet, as vintage bands often stretch. Finally, verify model numbers and engravings to confirm authenticity and ensure you’re paying a fair price for a genuine piece.