Well, yes, bvlgari sunglasses have serial numbers. To spot the fake ones, the first thing you have to consider is that each arm of the frame will be a sunglasses description. And generally speaking, for bvlgari sunglasses, the left arm in most cases describes where the sunglasses are made. For example, they are made in Italy, so it should be with the words "made in Italy". And then the right arm has the model number and sizes. This can be a clue too. By the way, all Bvlgari sunglasses have a company logo and a serial number engraved on the lens. So you can just check them. Besides, with high-quality materials, painstaking attention to detail, and with a contemporary, unmistakable design, it makes bvlgari sunglasses exclusive objects.