Omega Speedmaster Moonwatch
                    3873.50.31 (aka: 38735031)   
                
    
            
        
                            
                            Omega Speedmaster Moonwatch 3873.50.31 watch celebrates the historic legacy of space exploration with impeccable craftsmanship. Featuring a 42mm stainless steel case and a sapphire sandwich dial with contrasting black color, this luxury watch is powered by the Omega caliber 1863 chronograph movement, showcasing hours, minutes, small seconds, and a tachymeter bezel; its open case back adds a distinctive design touch, making it a perfect collector’s piece for sale.
| Brand: Omega | 
| Family: Speedmaster Moonwatch | 
| Reference: 3873.50.31 (aka: 38735031) | 
| Name: Speedmaster Professional Moonwatch Sapphire Sandwich / Strap | 
| Movement: Omega caliber 1863 Hours, Minutes, Small Seconds | Chronograph | 
| Produced: 2002/1 - 2015/1/24 | 
| Limited: No | 
| Glass: Sapphire | 
| Back: Open | 
| Shape: Round | 
| Diameter: 42.00 mm | 
| Color: Black | 
| Indexes: Stick / Dot | 
| Hands: Stick | 
| Material: Stainless Steel | 
| W/R: 50.00 m | 
| Lug Width: 20.00 mm | 
| Bezel: Tachymeter |