The signal is keyed to the watch's reference number (like 126610LN or SBGA211). If the seller didn't include it in the title, item specifics, or description, we have nothing to look up. This is the most common cause — and it's especially frequent on vintage and rare pieces, many of which predate modern reference-number conventions or use obscure ones sellers rarely list.
We found the reference, but too few examples sold in the last 90 days across eBay, Chrono24, and Reddit to compute a median we'd stand behind. Rare, vintage, boutique-only, and niche microbrand references often trade a handful of times a year — showing a "signal" from one or two sales would be guesswork, so we don't.
For a brand-new (to us) reference, the panel may say it's still gathering market data — a slower deep search is filling the cache, and the signal often appears within a few minutes if you keep the tab open or reload.
A signal is a comparison — asking price vs. market. Auction-format listings without a Buy-It-Now price, trades, and "offers only" posts don't give us a number to compare, so there's nothing to grade.
Some dealers (common on Chrono24) hide the price behind "Price on request." Until the seller shares a number, we can't tell you whether it's fair.
The extension reads one listing at a time on eBay, Chrono24, and Reddit r/WatchExchange. Search results, category pages, seller storefronts, and other sites won't trigger a signal. If you're on a supported listing and nothing appears at all, reload the page — and if it's still blank, try toggling the extension off and on.
If the listing has a clear reference number and asking price and you still got no signal — or the signal looked wrong — tell us. Every report is read and the trickier ones directly shape the parser.