Tudor Chronograph "Big Block" 79180 Silver Dial

Introduced in 1976, the Tudor Big Block Chronograph is, in many ways, Tudor’s counterpart to the iconic Rolex Daytona. The moniker “Big Block” comes from its heftier case size, designed to fit the robust 7750 automatic movement, which was an advancement over the hand-wind movement of the Daytona from the same period. With a production run from 1976 to 1995, the Big Block hails from Tudor’s lengthy history of chronograph timepieces known for unique styling, unparalleled quality, and unmistakable identifiers.

Serial: B,538,XXX

Year: 1993

Case Reference: 79180

Bracelet: 78360 Clasp Code with 589 Endlinks - Stainless Steel

Dial: Silver - tritium

Hands: Tritium

Case: 40mm x 14.5mm Thickness - Stainless Steel

Lug Width: 20mm

Caliber: Valjoux 7750 - Automatic - Serviced 09/29/25

Functions: Hours, Minutes, Seconds, Date, Chronograph

Accessories: No box/papers - watch only

Crystal: Acrylic

Bracelet size: 7.25”

Case is unpolished with light wear and minimal marks. Bracelet has minimal light wear. Dial, hands, and crystal have no wear. Slight paint loss on bezel. Watch was serviced 09/29/2025.

Tudor was established in 1926 by Hans Wilsdorf, the founder of Rolex, with a vision to create watches that offered the same reliability and precision as Rolex, but at a more accessible price point. Built with robust Swiss movements and housed in Rolex-quality cases, Tudor quickly earned a reputation for producing tool watches trusted by military units and professional divers around the world. In the 1950s and ‘60s, Tudor introduced iconic models like the Oyster Prince Submariner, worn by the French Navy, and carved out a legacy as a maker of rugged, no-nonsense timepieces built to perform under extreme conditions.

In recent years, Tudor has reemerged as one of the most exciting names in modern watchmaking. Collections like the Black Bay, Pelagos, and Ranger pay homage to the brand’s vintage roots while incorporating in-house calibers and contemporary design updates. The Black Bay Fifty-Eight, in particular, has become a collector favorite for its perfect blend of vintage proportions and modern engineering. With a design language all its own and a renewed focus on manufacturing independence, Tudor has established itself as far more than Rolex’s younger sibling—it’s a brand that balances heritage, innovation, and value with serious horological credibility.