Technical Details & Model History

• Case: 18kt yellow gold, 34 mm diameter
• Movement: automatic Rolex caliber 1570 with date function
• Dial: original black with applied gold indexes and rare “Sigma” signature
• Crystal: plexiglass with Cyclops lens
• Bracelet: original 18kt yellow gold Oyster with period-correct clasp
• Reference: 1503
• Year of production: 1966
• Condition: excellent, completely original and well preserved

Key Features

• Black “Sigma” dial — a rare and highly sought-after detail indicating the use of gold for indexes and hands
• Original 18kt yellow gold Oyster bracelet, uncommon for reference 1503
• Automatic caliber 1570, one of Rolex’s most reliable and enduring movements
• Elegant design and perfect proportions, emblematic of Rolex’s 1960s balance and style

Historical Context

The Rolex Date ref. 1503 is one of the most refined versions of the Oyster Perpetual line. Crafted entirely in 18kt yellow gold, it combines elegance and versatility. This 1966 example, featuring the rare black “Sigma” dial and its original gold Oyster bracelet, represents a highly desirable and uncommon combination for collectors of authentic vintage Rolex watches.