Omega Speedmaster Moonwatch Professional Sapphire reference # 310.30.42.50.01.002. with 3861 Master Chronometer movement. Transparent Caseback showing the 3861 movement Comes with box, papers, booklet, and Omega Warranty card dated 01/18/2022 Condition: Unworn/unsized Asking : $6799 offers welcome. Free FedEx overnight shipping / Fully insured Payment: Wire or Zelle Lots of references available. I’m a watch collector who enjoys Omega collecting . I have No affiliation or association with Omega USA or Omega Watches in any manner.