I am aware it is a SD 43mm. Still i stand by my opnions. Gen crystals have an AR (what u called blue) coating on the 2.5x cyclops. Im not saying this is perfect. I only got it to compare not pass it off as a gen. I have a few authentic rolexes for that. The reason i said I could get a gen bezel insert for $400 is i have connections (I am a watchmakers apprentice) and i know some ebay sellers who could get me one. I respect your opinion and wish u the best, therfore i did ask for opinions. Thanks and have a great day Sent from my iPhone using Tapatalk