Seiko Prospex Turtle SRPC23 Anthracite (SRPC23, SRPC23K1). Current Prices, JDM Listings, Market Analysis
The Seiko Prospex Turtle SRPC23 Anthracite is a JDM dive watch variant in the long-running Turtle line, sold under reference numbers SRPC23 and SRPC23K1. Its anthracite dial treatment gives it a distinct character within the Turtle family, which is part of why it maintains a dedicated secondary market following. Tonbo tracks this model as part of its broader JDM arbitrage coverage, monitoring Japan-side inventory and US resale pricing for buyers looking to source efficiently. At a current US median of $340, it sits in a competitive tier where timing and condition awareness matter.
Current US Market Value
The SRPC23 price on the US secondary market currently sits at a median of $340, with the middle 50 percent of recent sales falling between $280 and $420. That spread is meaningful for a watch in this price band, indicating real variation in condition and seller expectations rather than a tight consensus. It is worth noting that this analysis is based on a sample size of six comparable sales, which earns a yellow flag for comp quality. Six data points are enough to orient a buyer, but not enough to treat the median as authoritative. Anyone researching what an SRPC23 is worth should treat the $280 to $420 range as the honest working window and lean toward condition-verified examples before committing near the top of that band.
Active JDM Listings
Japan-side inventory for the Seiko Prospex Turtle SRPC23 Anthracite is light in the current 14-day window, with one confirmed listing visible on the Japanese market. That listing appeared on Yahoo Shop, one of Japan's primary resale platforms for JDM watches alongside Yahoo Auctions and Mercari Japan. A single active listing does not indicate scarcity or abundance on its own, but it is useful context for buyers considering whether to move now or wait for a broader selection to emerge.
- Jun 03 listing on Yahoo Shop (Japan)
- Listed at ¥222,430, which converts to a materially higher figure than the current US median when accounting for shipping and import costs
- Condition details for this listing are not confirmed in available data
- Platform is Yahoo Shop, which typically carries dealer-listed inventory rather than private-party sales
- No additional listings observed on other Japanese platforms in the same window
Recent Alert History
No strict buy alerts or opportunity-tier signals have fired for the Seiko Prospex Turtle SRPC23 Anthracite in the past 90 days. This is an honest read of the data rather than a gap in coverage. It means the model has not produced a Japan-to-US price gap wide enough to clear Tonbo's alert thresholds during that period. Buyers tracking this reference through Tonbo's signals feed would have received no actionable triggers in this window. That can change quickly when new listings surface at different price points, which is why ongoing tracking is more useful than a one-time check.
Japan vs. US Price Gap
The primary dynamic for anyone looking to buy SRPC23 Japan is that JDM Turtle variants occasionally surface below US market rates when Japanese sellers price for domestic buyers unfamiliar with international demand. The single recent Yahoo Shop listing at ¥222,430 is priced above where an arbitrage opportunity would typically emerge once shipping, PayPay or proxy fees, and import duties are factored in, so that specific listing does not represent a clear spread. Buyers browsing current JDM deals should keep in mind that the comp pool for this model is thin at six sales, which means condition variance carries outsized weight. A piece that photographs as excellent but arrives with unverified service history or undisclosed crystal wear can swing realized value by $50 to $80 in either direction, which is significant relative to a $340 median.
Get Real-Time Alerts for Seiko Prospex Turtle SRPC23 Anthracite
If you are watching this model for the right entry point, manual checks are an inefficient way to track it. Tonbo's alert system monitors Japan-side listings and US comp data continuously, notifying subscribers when a verified opportunity clears the threshold for the SRPC23. Paid alert tiers are detailed at tonbomarket.com/pricing. If you are not ready for a paid plan, the free newsletter at tonbomarket.com covers JDM market movements across the broader Seiko Prospex line and related references on a regular cadence.