SpecStudio
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Tudor North Flag
Ref. M91210N-0001
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Case
- Diameter
- 40mm
- Material
- Stainless Steel
- Finish
- Satin-brushed
- Water resistance
- 100m
- Caseback
- Sapphire crystal
Crystal & dial
- Crystal
- Sapphire
- Dial color
- Black
- Indices
- Applied
Movement
- Caliber
- MT5621
- Type
- Automatic
- Power reserve
- 70h
2 colorways
Market
RetailNot listed
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Closed · 90d3Asking-price history
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Retail stock & market context
Tudor on the secondhand market
+12.5%
2026 so far · +5.2% to +17.3% · 43 matched watches
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Year-by-year readings →Similar watches
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Summary
The Tudor North Flag (ref. M91210N-0001) is an automatic watch, with a 40mm stainless steel case, powered by the MT5621 movement and a 70-hour power reserve. Water resistance is rated to 100m, under a sapphire crystal.
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