Seiko 5E31-5B50
Spirit Tank
What Should You Pay?
Estimated fair market values. Actual prices vary by condition, completeness, and seller.
Recent Comparable Listings
A tank-style dress watch from Seiko's Spirit line featuring a rectangular gold-tone case and quartz movement. This model represents Seiko's approach to elegant dress watches during the 1980s, combining Japanese precision with classic design elements.
Specifications
Movement
More from Spirit
View all Spirit references →Related Guides & Articles
The best watches you can buy under $1,000 in 2026 — pre-owned and new picks from Seiko, Hamilton, Orient, Tissot, and G-Shock with current prices.
Current secondhand Seiko prices — from the Seiko 5 to Presage and Prospex. See pre-owned median prices, ranges, and the best Seiko watches to buy used.
Learn how to compare pre-owned watch prices across marketplaces — understand market value, spot overpriced listings, and find the best deal on the watch you want.
The best deals on pre-owned watches this month — undervalued models from Rolex, Omega, Tudor, Seiko, and more, with current market prices and why they're worth buying.