RAY BAN RB 5246 5092 52 16 Black/turquoise Eyeglasses Frame - Etsy
Ray Ban 5246 Eyeglasses – designeroptics.com
RB 5246 is a copper-phosphorus brazing alloy in bare rod form, for capillary joining of copper and copper alloy parts. It is designed to deliver low-cost, watertight joints and is particularly for