Seiko SBDX001
Frequently called the Marinemaster or MM300.

Acquisition details
- Price: 185,000 JPY, about $1,600USD at the time
- List is 251,000 JPY!
- Bought from Katsu Higuchi
- This is pre-WR days, so no discount or anything like that.
Timeline
- Bought 12/24/06 with saved funds
- Sold 6/24/2010, 900 to Walter. Ouch. Heavy discount for dings and scratches.
Links
Quick notes and overall review
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Still one of my all-time favorite watches. Wore it for the birth of my first daughter, and used it to measure delivery breathing for ten memorable hours.
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