eBay asking prices

eBay asking range$929

$859$1,145

10 active listings · as of 2026-07-31

What's your watch worth?

Adjust condition and completeness to estimate this specific watch's value.

Original BoxWatch includes original packagingCard / PapersOriginal certificate of authenticityHang TagOriginal retail hang tag still attachedRecently servicedServiced within the last 2 years

Estimated value$819Estimated range $770–$868

Excellent — full-set baseline
Discontinued+5%

Estimate based on your inputs — not a formal appraisal.

Market References

Retail (MSRP)

$700

Grey market avg

$715Avg Price

eBay asking

10 active listings

$929Avg Price

Case39.5 · Stainless Steel

DialGreen · Sunburst

BezelSteel · Fixed Compass

BraceletSteel · Steel Bracelet

Production2020

Condition basisUsed

Rarity2

LiquidityHigh

Variant guide

Internal compass bezel and cathedral hands reference Seiko's original 1959 mountaineering watch.

Buyer's guide

A beloved field-watch alternative with a genuinely useful internal compass bezel function.

Seller's guide

Green-dial Alpinist references consistently outsell other colorways due to the model's strong collector following.

AI market analysis

For buyers

The current eBay median of $907 is significantly inflated compared to the $700 MSRP and the $650-$780 grey market range. Exercise patience; this model has high liquidity and moderate rarity, suggesting prices should eventually normalize. Aim for a purchase closer to the $780 upper grey market limit, not the current eBay asking.

For sellers

Capitalize on the current market sentiment, evidenced by an eBay median of $907, which is a substantial premium over the $700 MSRP. List your SPB121 confidently around the $875-$900 mark, given its high liquidity ensures quick movement. While current demand is strong, its moderate rarity and high liquidity suggest prices may not sustain such a premium long-term.

AI-generated from current market data. Not financial advice.

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