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1999 MILLENNIUM VINTAGE – THE COLLECTOR’S DREAM SPEEDY! ⏰
Step into Y2K history with the Omega Speedmaster MK40 3520.50, one of the most feature-packed and collectible Speedmasters ever produced.
This 39MM stainless steel vintage beauty offers the perfect wrist presence—sleeker than the 42MM Moonwatch yet boasting far more complications. Powered by the legendary Caliber 1151 automatic movement (based on ETA Valjoux 7751), this watch delivers an impressive range of functions:
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Triple Calendar Display – day, date, and month 
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24-hour day/night indicator at 9 o’clock 
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Chronograph with tachymeter scale 
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Small seconds and luminous hands for maximum legibility 
Recently fully serviced in July 2025, this watch is backed by an extended warranty until February 2026, giving you complete peace of mind.
With its rare triple calendar complication and refined 39MM proportions, the MK40 is a true outlier in the Speedmaster family—making it a must-have for serious collectors seeking something unique and increasingly hard to find.
✅ Condition: 85% (Excellent overall, minor desk scratches typical of vintage pieces)
✅ Includes: Original Box, Warranty Card, Instruction Papers, Customized Travel Case (with your initials)
✅ Warranty: Valid until February 2026
Specifications:
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Year: 1999 
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Reference No.: MK40 3520.50 
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Case Size: 39MM Stainless Steel 
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Dial: Black 
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Strap: Stainless Steel (fits up to 8-inch wrist) 
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Movement: Automatic (Caliber 1151) 
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Functions: Triple Calendar (Day, Date, Month), 24-Hour Indicator, Chronograph, Tachymeter, Alternate Timezone 
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Crystal: Sapphire 
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Water Resistance: 30M (3 ATM) 
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Country of Manufacture: Switzerland 
Shipping:
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FedEx 2-Day Shipping (Free within the 48 contiguous U.S. states) 
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Same-day shipping for orders placed before 2 PM CT 
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Located in Houston, TX 
About Us:
H-Town Watches, Houston TX – Experts in authentic, pre-owned Swiss luxury watches. Trusted for quality, authenticity, and the best prices in fine timepieces.













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