BEZEL & INSERT KIT FOR ROLEX GMT MASTER II 116710 116710LN 6 DIGIT MODELS BLUE
116710LN model with sapphire crystal. Rolex GMT II model 116710. Sapphire Crystals. 1 x Bezel with Retaining Ring. Sapphire crystal fits Rolex. Q: How do I check what case number and/or serial number I have on my Rolex or Tudor?.