How can I tell if my Ray-Bans are vintage?

To tell if your Ray-Ban sunglasses are vintage, look at the temples. There, you will find the four-digit serial number. Cross-referencing this number with information provided by trusted online resources can help you date your eyewear. Generally, any pair of Ray-Bans made 20 years ago or more is vintage. Another way to get a rough idea of the age of your sunglasses is to look for an BL or B&L mark on the lenses. This mark refers to the previous owner of Ray-Ban, Bausch Lomb. Since the company sold the eyewear brand in 1999, any sunglasses that bear its initials are usually vintage. For assistance in dating your sunglasses, consult a certified appraiser or other knowledgeable expert. On 1stDibs, find a collection of vintage Ray-Ban sunglasses.