Vintage Omega Cosmic, Triple Calendar, Moonphase Ref. 2471/1, Radium dial

The Omega Cosmic was introduced in 1947 and remained in the brand’s catalogue until 1956 as its most prestigious and complicated wristwatch offering of the time. This example is a reference 2471/1 in stainless steel, featuring the Omega Caliber 381 (formerly 27 DL PC AM) — Omega’s first triple calendar moonphase movement. The movement in this watch dates to 1944, predating the official launch of the Cosmic line and placing it among the earliest examples known with this configuration.

The dial follows the classic Cosmic layout, with day and month windows at 12 o’clock (displayed in French), and a moonphase set within a large sub-seconds register at 6 o’clock. The outermost scale is a blue date ring, read via a central blued steel pointer hand. The hands and dial markers contain traces of original radium lume, now beautifully aged to a soft, warm tone, adding to the untouched vintage character of the watch.

CASE:

• Excellent overall condition with minor signs of wear

• 3-piece stainless steel case with snap-on case back

• 35 mm (excluding crown) / 42 mm lug-to-lug / 18 mm between lugs / 10.2 mm thick
  

• Reference: 2471/1

• Movement year: 1944
  

MOVEMENT:

• Omega Caliber 381 (27 DL PC AM) – manual winding

• 17 jewels, 18,000 A/h, approx. 44-hour power reserve

• Professionally serviced 
  

DIAL:

• Cream dial with even patina and some spotting near the center

• French calendar wheels

• Original leaf hands and blued steel date hand

• Moonphase display with gold-tone moon and stars

• Radium lume present on hour markers and hands