Short answer
720.025 does not match a reference number from Patek Philippe, Vacheron Constantin, A. Lange & Söhne, or any other maker that builds grand complications. In replica listings, codes of this shape act as internal seller or factory numbers. Two sellers can use 720.025 for two different watches. Treat the code as a stock label, not a model name.
What a grand complication is
A grand complication is a watch that carries at least three complications in one case. The common definition names a minute repeater, a perpetual calendar, and a split-seconds chronograph. Fewer than a dozen makers have produced one. Genuine examples start near $300,000. A Patek Philippe 6300A sold for CHF 31 million at the Only Watch auction in 2019.
What the code 720.025 tells you
Nothing about a specific watch. Decimal codes appear in dealer spreadsheets and order forms. They do not appear in maker catalogs. A listing that shows 720.025 with no photo of the caseback, no movement caliber, and no case measurements gives a buyer no data.
What a replica in this class holds
- Movement: Asian clones of the ETA 7750 or ETA 2824 in most cases, or a quartz module in cheaper builds.
- Calendar: day, date, and month wheels driven by the movement. The leap correction of a perpetual calendar is absent.
- Chronograph: two or three pushers on some models. Split-seconds hands are rare and often decorative.
- Repeater: a minute repeater with tuned gongs and a rack does not appear at replica prices. A listing that claims one at $400 is mislabeled.
- Case: steel, 13 mm to 16 mm thick, sized to hold the module stack.
Checks before you trust a listing
- Ask for the movement name and caliber. "Swiss movement" is not an answer.
- Ask for case diameter and thickness in millimeters.
- Ask for a video with sound if the text claims a repeater.
- Watch the calendar for 24 hours. Day, date, and month should move on their own.
- Compare the price to the claim. A working perpetual calendar module costs more than most replica watches sell for.
Legal status
In the United States, 19 U.S.C. 1526 bars import of goods that copy a registered trademark. Customs and Border Protection can seize a shipment and destroy it. Selling a counterfeit as genuine is fraud under state law. The label on the listing does not change the rule.
What stays unknown
No public catalog ties 720.025 to a specific watch. A photo, a movement number, and a case measurement are the data that matter. The code alone carries none.