Citizen Challenge Diver 62-6198 from 1976 (With Extra Matching Crystal and Bezel)

The Citizen 62-6198 Challenge Diver is a distinguished timepiece from the 1970s, celebrated for its robust design and reliable performance. Encased in stainless steel, it measures 40.5mm in diameter (excluding the crown) and 43mm with the crown, with a lug-to-lug length of 47mm and an internal lug width of 20mm. The watch features a unidirectional rotating bezel with a black aluminum insert, complemented by a thick mineral crystal, enhancing its durability.

The black dial showcases applied indices filled with luminescent material, ensuring readability in low-light conditions. Notably, the date display at the 3 o'clock position utilizes a red date wheel, adding a subtle yet distinctive touch to the overall aesthetic. The silver-toned hands, also luminescent, maintain the watch's functional integrity.

At its core, the 62-6198 houses the 21-jewel Caliber 6000 automatic movement, operating at 21,600 vibrations per hour. This movement supports both automatic and manual winding, along with a quick-set date function—a feature that was ahead of its time during its release.

The screw-down crown and case back contribute to its 150-meter water resistance rating, underscoring its capability as a professional-grade diver's watch. Originally, this model was offered with either a stainless steel "H-link" bracelet or a Tropic rubber strap, both designed for comfort and durability.

This particular example, produced around 1976, is in well-worn condition, with clear signs of heavy use on the case and bezel. The dial and hands show aging, characteristic of a well-loved piece. Despite its age, the watch maintains its authenticity and appeal. It comes fitted on a matching aftermarket bracelet and is fitted with a brand new sapphire crystal ensuring legibility. 

The watch comes on a matching generic bracelet and is accompanied by a complementary-style crystal and bezel. 

The Citizen 62-6198 Challenge Diver stands as a testament to Citizen's commitment to quality and innovation during the 1970s, offering both collectors and enthusiasts a blend of historical significance and enduring functionality.

For privacy, the serial number has been discreetly covered in the photos, providing complete ownership discretion.

Here are the key specifications for this striking timepiece:

Diameter: 40mm
Thickness: 13mm
Lug Width: 20mm