antique sunglasses of 60's are diverse. Among them, audrey hepburn's cat eye sunglasses must be the most typical sunglasses style, followed by John Lennon's round tinted sunglasses. 60's Ray ban aviator sunglasses are also very popular. If you buy antique sunglasses of 60's for your grandfather, I think John Lennon's round style tinted sunglasses are good choices. And you can see what do antique sunglasses of 60's look like at https://www.ebay.com/sch/i.html?_nkw=vintage+60's+sunglasses
One of antique sunglasses of 60's is round sunglasses. Nowadars, in the background of retro fashion, those 60's style round sunglasses become popular and a new fashion trend,too. Another type of antique sunglasses of 60's is the square black sunglasses. Both of them have given a good interpretation of the antique sunglasses of the 60's and they are worn by many celebrities like movie stars, popular singers and so on.