Omega Chronograph Cal. 27 CHRO C12 T2 PC – Rose Gold Jumbo Elegance

Ask any serious collector about legendary chronograph movements and the Lemania-designed Cal. 27 CHRO C12 T2 PC is sure to come up. Created by Albert Piguet, this iconic movement later evolved into the famous Omega Cal. 321, powering early Speedmasters of the Space Age.

This example dates to 1944 and is housed in a striking 37.5 mm 18k rose gold jumbo case with elegant, slightly downturned lugs. The silver dial, now showing a warm rose-hued patina, pairs beautifully with rose gold hands and hour markers.

A refined alternative for collectors who admire the Cal. 321 lineage but seek something more discreet, this chronograph blends technical heritage, dress-watch elegance, and true mid-century charm.

- wrist size in our picture is 18cm circumference -

DIAL:

• original never touched silver colored dial in great condition with a beautiful warm patina with a rose hue
• original hands and crown
  

STRAP & BUCKLE:

• brown KARDINAL Alligator Embossed Leather Watch Strap fitting up to 20 cm wrist size / 3.7 mm thick
• rose gold plated GOLDAMMER buckle

CASE:

• excellent overall condition, showing almost no traces of use
• 3- body 18k rose gold case with snap-on caseback
• 37.5 mm (without crown) / 47 mm (lug-to-lug) / 18 mm (between lugs) / 11 mm thick
  
• year: 1944
  
• total weight: 54 g

MOVEMENT:

• Omega Caliber 27 CHRO C12 T2 PC - manual wind
• 17 jewels, 18000 A/h, 44 hours power reserve
• professionally serviced 01/2026
• +25 sec/d / 280°

BOX & PAPERS:

• GOLDAMMER certificate of authenticity & service documentation card
• GOLDAMMER box

GOLDAMMER REFERENCE: #1393