MCM Navigator Eyeglasses MCM2107 724 Gold 56mm 2107 145 mm. Vintage. No. Frame Color. Gold. Style. Rectangle. Frame Material. Metal. Features. Full Rim. Lens Socket Width. 56 mm. Bridge Width. 14 mm. The MCM 2107 optical frames feature a rectangular Navigator shape UNISEX. This model features a unique overlapping bridge design and gradient colored gold and copper.