A rare opportunity to own a vintage Tudor chronograph in exceptional, one owner unpolished condition — this Tudor “Big Block” reference 79170 is a stunning example of the brand’s golden era of tool watches. Housed in a robust 40mm stainless steel case with thick lugs and sharp chamfers, this piece remains unpolished and complete with its original factory finishes. The black rotating bezel, contrasting subdials, and strong dial give it unmistakable Daytona-inspired appeal, while the Valjoux 7750 automatic chronograph movement offers proven reliability. This 79170 is a collector-grade time capsule from the 1990s — a perfect blend of history, presence, and originality.

Today's example comes to us as watch only from the original owner out of Hawaii and is in excellent unpolished condition! The unpolished case is thick with razor sharp lugs. The dial is excellent showing nice patina. The bracelet has 12 total links and shows no stretch while the chronograph feature functions perfectly as it should.