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National Jewellers

National Jewellers

Examination Record

Stock no.
NJO0131
Examined
November 2026

Tudor Black Bay GMT M79830RB, Burgundy and Blue Bezel (2020)

Tudor

2020 Black Bay GMT, Burgundy and Blue Bezel

Tudor's Black Bay GMT, reference M79830RB: a 41 mm steel case with the bidirectional bezel and its burgundy and blue 24-hour insert, a domed black dial with snowflake hands, the red GMT hand and the date at three. The manufacture calibre MT5652, a certified chronometer with about 70 hours of reserve. Water resistant to 200 metres, on the riveted-style steel bracelet with a folding safety clasp. A 2020 watch.

Reference
M79830RB
Serial no.
On file
Year
2020
Condition
Very Good
Case size
41 mm
Case material
Stainless steel
Movement
Automatic
Dial colour
Black
Bracelet
Link bracelet
Measurements
Case 41 mm · lug width 22 mm · 14.6 mm thick · fits a wrist of about 17 cm (6¾ in)

What we examine

  • Our horologists examine the movement and check serial and reference numbers.
  • The dial, hands, crown, bezel, bracelet and clasp are assessed for consistency with the model.
  • Condition is assessed on our six-tier grading scale; this piece is graded Very Good.

The piece described on this record was examined and authenticated by National Jewellers before it was offered for sale. We stand behind the authentication of every item we sell.

This record sets out our examination of the piece. It is not an appraisal or a statement of value. National Jewellers is independent and is not affiliated with, authorised by or endorsed by Tudor; brand names are trademarks of their owners. To confirm this record, write to info@nationaljewellers.ca quoting the stock number.