Short answer

720.025 is not a Patek Philippe reference. Patek Philippe Grand Complications use four digit model numbers with a hyphen and a material code, such as 5270P-001 or 5320G-001. The 720.025 string appears on replica listings and wholesale sheets as an internal seller SKU. Two sellers can share the number for two different watches. Treat it as a warehouse label, not a model name.

What a grand complication is

A grand complication is a mechanical watch with at least three complications beyond basic timekeeping. The common set is a perpetual calendar, a chronograph, and a minute repeater. Some makers add a split seconds chronograph, a tourbillon, or a sidereal time display. Patek Philippe, Vacheron Constantin, and Audemars Piguet are the names most cited in this class. Output is small. Prices on the primary market start near six figures in US dollars.

Where the code comes from

Replica catalogs run to hundreds of SKUs. Sellers shorten long model names to numbers for two reasons. A number keeps the brand name out of search results. A number also keeps the brand name off shipping labels. The code tells you nothing about the movement inside. Ask the seller which watch the SKU maps to. Request the case size, case metal, dial color, and strap type in writing before payment.

What differs on replica versions

Case diameter often runs 0.5 mm to 1 mm larger than the original. The extra room lets a stock movement fit inside a case that looks close to the real size. Dial printing uses pad printing. The original uses multi layer lacquer and applied gold markers. Subdials sit where the movement places them, not where the original places them. Case edges on replicas get a polish. The original gets a bevel cut and then hand finished.

Calendar and chime functions

Perpetual calendars are the hardest part to copy. Many replica grand complications use an annual calendar module or a simple calendar. A simple calendar shows 31 days and needs a reset after each 30 day month. A true perpetual calendar tracks leap years to 2100. Minute repeaters cost more to build than any other complication. Replica listings often show a repeater slide on the case side with no chime inside. Ask for a video with sound if the listing claims a repeater.

Movements used in replicas

Three movement groups show up in replica grand complications. Chinese automatic movements from Seagull, Hangzhou, and Shanghai are the base. Modified Asian clones of the ETA 2824 add a calendar module. Modified Swiss ETA or Sellita movements sit at the top of the replica price range. A tourbillon adds cost. A working perpetual calendar adds more. Many listings pair a tourbillon with a printed calendar for the look. The movement inside will not match the complication count on the dial.

Price bands

200 to 400 US dollars buys a basic automatic with a printed calendar. 600 to 1,200 dollars buys a tourbillon or a working annual calendar. 2,000 dollars and up buys a modified Swiss movement and a closer case profile. No replica at any price matches the hand finishing, the rate certification, or the service network of the original.

Legal and shipping facts

Replica watches copy registered trademarks. US Customs and Border Protection can seize shipments under 19 USC 1526. The agency publishes seizure data each year. Importers lose the goods, and there is no refund from the carrier. Trademark owners file civil claims against sellers under the Lanham Act. Reselling a replica as a genuine watch is a criminal offense in most US states.

Checks to run on a listing

  • Ask for the exact case diameter in millimeters.
  • Ask for the lug width and the strap material.
  • Ask for a movement photo with the caseback removed.
  • Ask for a video of the calendar changing at midnight.
  • Ask which functions work and which are decorative.
  • Ask for the return window and the return address.

If the seller cannot answer, the photos are stock images from another source.

What to expect at delivery

Weight is the first difference. A gold plated steel case weighs less than solid gold. Dial text sits closer to the edge on many replicas. The crown profile differs. Screw threads on the caseback are coarser. Timekeeping out of the box may run 15 to 30 seconds a day, against -3 to +2 seconds for a chronometer rated movement. Water resistance on replicas is not tested. Do not swim with one.