Citizen Attesa DEAR Collection Moon Phase LE BY1000-51L (BY1000-51L, BY1000). Current Prices, JDM Listings, Market Analysis
The Citizen Attesa DEAR Collection Moon Phase LE BY1000-51L is a limited-edition JDM release sitting within Citizen's premium Attesa lineup, a line known for its technical precision and solar-radio positioning in the Japanese domestic market. The DEAR Collection branding and moon phase complication place this reference closer to Citizen's dress-watch territory than its sportier Attesa variants. Tonbo tracks the BY1000-51L because limited-edition JDM Citizen references with moon phase displays carry genuine cross-border arbitrage potential that standard catalog pieces do not. At a current US median of $820, this watch occupies a price tier where informed sourcing from Japan can still produce meaningful savings.
Current US Market Value
The BY1000-51L price in the US currently sits at a median of $820, with the interquartile range running from $739 at the low end to $896 at the high end. That $157 spread is relatively tight for a JDM limited edition, which suggests buyers are not seeing dramatic condition-driven swings in realized prices. That said, the sample size behind these figures is limited, and the comp quality rating for this reference is 🟡 Limited comps. What that means practically is that the median should be treated as a directional anchor rather than a hard floor or ceiling. As more transactions are recorded, the confidence interval will tighten. Anyone pricing a BY1000-51L for sale or evaluating a purchase should weight recent completed sales heavily and treat the current data as a starting estimate.
Active JDM Listings
Japan is showing active supply for the BY1000-51L right now, with multiple listings appearing across both fixed-price shops and flea-market platforms on May 30. The spread in asking prices is notable, ranging from ¥110,000 at the low end to ¥163,900 at the high end, which suggests meaningful condition variance in current supply. Several listings describe the piece as new or close to unused, which matters significantly when evaluating buy BY1000-51L Japan opportunities.
- ¥110,000 on Yahoo Flea Market, listed as close to unused
- ¥118,500 on Yahoo Flea Market, listed as new
- ¥118,800 on Yahoo Shop
- ¥155,100 on a Japanese platform (condition unspecified)
- ¥163,900 on Yahoo Shop
At current exchange rates, the lower end of this range represents a potentially attractive entry point relative to the US median, though shipping, import duties, and any intermediary fees will affect the final landed cost.
Recent Alert History
No strict or opportunity alerts have fired for the Citizen Attesa DEAR Collection Moon Phase LE BY1000-51L in the past 90 days. This is worth noting honestly. Tonbo's alert system flags listings when pricing crosses defined thresholds relative to tracked comps. The absence of alerts over this window could reflect a market where Japan asking prices have stayed elevated, or it could be a function of the limited comp data available for this reference. As the comp base grows and more listings are processed, alert coverage for the BY1000-51L will become more precise. You can browse current triggered signals across all tracked models at tonbomarket.com/signals.
Japan vs. US Price Gap
The gap between Japan asking prices and the US median for this reference is driven primarily by limited Western availability. The BY1000-51L was sold into the Japanese domestic market and was not widely distributed through US retail channels, which means US buyers sourcing from Japan absorb a knowledge premium and a logistics cost that not every buyer is willing to take on. The presence of new and close-to-unused stock on Yahoo Flea Market suggests original retail buyers are occasionally liquidating, which can create cleaner sourcing opportunities than the used gray market typically offers. The main risk here is condition variance combined with thin comps. With a 🟡 Limited comps rating, there is genuine uncertainty about where a specific example will clear on the US side, and overpaying on the Japan side while underestimating landed costs is a real scenario. Active deals worth watching across all tracked JDM references are aggregated at tonbomarket.com/deals.
Get Real-Time Alerts for Citizen Attesa DEAR Collection Moon Phase LE BY1000-51L
Tonbo monitors JDM listings across Japan's major platforms and compares asking prices against tracked US comps automatically. When a BY1000-51L listing crosses a threshold worth acting on, subscribers receive an alert before the window closes. Paid alert tiers and pricing details are available at tonbomarket.com/pricing. If you want to follow the broader JDM market before committing to a plan, the free newsletter at tonbomarket.com covers notable listings and market movements on a regular basis.