Model 309 is a frame whose bridge, end-piece and temple are laminated with acetate material partially, which is the Eyevan’s original method developed in the 80’s. When looking close at details or parts including swaged nose pad or original pattern on a metal core, these are very characteristic and show a strong assertion, but outer appearance is designed to look plain, placing such details in the area inside not seen from a front view. Only a full plastic frame in the 2nd collection.