Omega Speedmaster Moonwatch ref 3876.50.31 has four sub-dials instead of the typical tri-compax dial including sub-dials for small seconds chronograph minutes chronograph hours and one for the date and Moon Phase. The additional sub-dial is a spectacular homage to the collection’s celestial roots featuring the Moon and stars against a deep blue background and a surrounding date scale. Aside from this additional feature the discontinued Omega 3876.50.31 is a standard Speedy. A slim Tachymeter scale surrounds the dial and the case is graced by chronograph side pushers. While many editions of the legendary chronograph are paired with a matching metal bracelet this ref. 3876.50.31 is slightly more sophisticated on leather.