Up for grabs is an Omega Speedmaster Triple Calendar MK40
Reference 3520.50 with black dial, bezel, 39mm case
56.9 mil serial number circa 1999 production
Very good vintage condition with signs of wear and age. Appears unpolished. Clear serial number on caseback.
Dial and hands are original and damage-free.
Original Omega bracelet with full links, fits a large wrist.
Watch comes with Omega boxes and manual.
No service history is known. Timegrapher shows -8 seconds per day at about 270 amplitude.