The Omega Speedmaster Day-Date (aka Triple Date) was introduced in ~1993 and this unpolished example is one of the early 3521.30 models. It’s perfect for the Speedy enthusiast looking for something different along with a few extra complications.
It is powered by the original Omega caliber 1150. In addition to the standard chronograph function, you’ll also get the a 24 hour indicator at 9:00, a date indicator circling the perimeter of the dial, as well as the day and month at 12:00.
In 1999, Omega updated the Day-Date Speedy with a bump in reference number to 3523.30 and caliber number to 1151. With even more upgrades in 2007, the Day-Date Chronograph became the 3221.90 with a chronometer rated 3606 movement and 40mm case diameter.
