Charles Jourdan Sunglasses

Can you tell me if these are authentic?

I recently came across a pair of Charles Jourdan Sunglasses at a used goods store for a few dollars. They have all the right markings, materials, made in france etc. The only thing I can not varify or find any reference to is the style number 9045 J 134. The designer died in the 70s but the company still produces shoes. How can I tell if these are legitamite and when they were manufactured. And some type of embellishment is missing on the corners. I'm not sure what bc I can't find any glasses like it. Other than that they are in fairly good condition, no scratches in the front. One arm looks like a kid bit it if you look really close. I have more pics if needed. I want to make sure they are real before I try to sell them. Any comments, advise or a direction to be pointed would be greatly appreciated. Thank you!!