Case #566 — Tudor Black Bay GMT "Pepsi" Ref. M79830RB-0001

Case #566 — Tudor Black Bay GMT "Pepsi" Ref. M79830RB-0001

Status: Active Investigation
Condition: Excellent Pre-Owned
Scope: Box, Papers, and Cards
Year: 2019

🔎 Case Notes

The Tudor Black Bay GMT "Pepsi" Ref. M79830RB-0001 has become one of Tudor's most celebrated modern sports watches. Combining the brand's vintage-inspired Black Bay aesthetic with true GMT functionality, it offers travelers and collectors an exceptionally capable everyday watch with unmistakable character.

Its red and blue anodized aluminum "Pepsi" bezel has become one of Tudor's defining modern designs, while the 41mm case, gilt-accented black dial, and snowflake hands maintain the heritage-inspired look that launched the Black Bay family into prominence. Inside is Tudor's Manufacture Calibre MT5652, a true traveler GMT movement with an independently adjustable local hour hand and approximately 70 hours of power reserve.

This 2019 example is presented in excellent pre-owned condition and includes its box, papers, and cards. The bracelet is currently sized to fit approximately a 7.75-inch wrist. The bezel does not index perfectly at the 12 o'clock position and would likely benefit from a simple adjustment during routine service.

🕰️ The Evidence

Reference: M79830RB-0001
Model: Tudor Black Bay GMT "Pepsi"
Case: Stainless Steel
Case Size: 41mm
Bezel: Bidirectional Red & Blue Aluminum 24-Hour GMT Bezel
Crystal: Domed Sapphire Crystal
Dial: Black with Gilt Accents and Snowflake Hands
Movement: Tudor Manufacture Calibre MT5652 Automatic
Power Reserve: Approximately 70 Hours
Functions: Hours, Minutes, Seconds, Date, True GMT
Bracelet: Stainless Steel Bracelet
Bracelet Fit: Approximately 7.75-Inch Wrist
Water Resistance: 200 Meters
Year: 2019
Accessories: Box, Papers, and Cards

Condition Notes: Excellent pre-owned condition overall with light wear consistent with careful ownership. The bezel does not align perfectly at the 12 o'clock position and may benefit from adjustment.

🌍 GMT Heritage

The Black Bay GMT blends Tudor's classic dive-watch styling with practical travel functionality. Its true GMT movement allows the local hour hand to be adjusted independently, making it an ideal companion for frequent travelers while preserving the robust construction and vintage-inspired design language of the Black Bay collection.

🌟 Collector Provenance

Since its introduction, the Black Bay GMT has become one of Tudor's most sought-after references. The "Pepsi" bezel, manufacture GMT movement, and strong everyday versatility have made it a cornerstone of the modern Tudor lineup.

This 2019 example offers a complete set with box, papers, and cards in excellent overall condition. The minor bezel alignment issue is disclosed for complete transparency and should be straightforward to address if desired.

🧾 From the Case File

Recovered as a 2019 Tudor Black Bay GMT "Pepsi" Ref. M79830RB-0001. Presented in excellent pre-owned condition with box, papers, and cards. Bracelet sized to fit approximately a 7.75-inch wrist. Bezel indexing sits slightly off-center at 12 o'clock.

🗝️ BST Verdict

Case #566 delivers one of Tudor's defining modern sports watches. With its manufacture GMT movement, iconic "Pepsi" bezel, complete accompanying set, and excellent overall condition, it represents an outstanding opportunity to own one of the brand's most popular references.

👉 Every case deserves a closer look.