The Vintage Heuer Monaco 1133G with a "Cadran Gris" (grey dial) is a rare and highly collectible 1970s automatic chronograph. While the blue dial "Steve McQueen" (1133B) is the most famous, the 1133G is often favored by collectors for its technical, monochromatic aesthetic.

• Case Size: 40mm x 40mm stainless steel square case.

• Movement: Heuer Calibre 11 or 12 automatic chronograph, notable for its left-hand crown and micro-rotor architecture.

• Dial: Metallic grey ("Cadran Gris") with two sub-registers (usually black or matching grey) and a date window at 6 o'clock.

• Crystal: Domed acrylic (Hesalite).

• Bracelet: Often found on a stainless steel "NSA" style bracelet or a racing leather strap.