60s Cabana brand sunglasses

Real 60s era Sunglasses brand is Cabana, nonprescription lenses. These are high quality not mass produced more like from an optician. Was able to find references to Cabana brand online also references name Titmus on other online listings. Size 5.5 inches across. Markings show Cabana with marking over N also faint mark T8-3C7(?). Smaller in size straight temples bent at ears. Could be unisex but seem more like a style for women.