Technical Details & Model History

• Case: 18k white gold with extremely rare decorative finishing, typical of the most exclusive versions, 38 mm diameter
• Movement: automatic Longines High Frequency (HF) caliber 6652
• Dial: original blue dial with applied diamond hour markers
• Crystal: sapphire
• Strap: blue leather
• Buckle: original Longines buckle
• Reference: 4005-1
• Period of production: 1970s
• Accessories: original box and warranty
• Condition: new old stock, never worn

Key Features

• HF (High Frequency) version, symbol of Longines’ technical innovation during the 1970s
• Extremely rare 18k white gold case with intricate decorative finishing
• Original blue dial with diamond hour markers, a highly exclusive configuration
• Never worn example, complete with original buckle, box and warranty

Historical Context

During the 1970s, Longines invested heavily in the development of high-frequency movements, designed to deliver greater precision and chronometric stability. The Flagship HF line represented the most elegant expression of this technical pursuit. Reference 4005-1, presented here in 18k white gold with blue dial and diamond markers, is among the rarest and most refined versions produced. A never-worn example, complete with its original accessories, represents an exceptional opportunity for collectors who value originality, condition, and historical significance.