The short answer

"Patek Philippe 720" is not a model name in Patek's catalog. It is shorthand. Sellers and forum posters trim long references into short, searchable numbers, and "720" tends to get attached to one of two things: a small dress Calatrava in the 7200 range, or a Twenty~4 piece from the 7300 series. Both are small, and both lean toward women's sizing. So when a listing advertises a "fake Patek Philippe 720" and shows a 40mm steel sports watch with a blue dial, the number and the watch do not agree. That mismatch is the first thing to check, and it costs nothing.

A nickname tells you nothing about what is inside the case. The caseback tells you something. The movement tells you more.

Why the reference number carries weight

Patek engraves a reference number and a movement number on the caseback of every watch it ships, and the two travel together in the brand's records. On a replica, that engraving is usually the weakest link. I look for a number that appears in dozens of listings across different sellers, which means it was copied from a photo rather than stamped from a real watch. I also look at the depth and finish of the engraving. Genuine stamps are crisp and even. Laser etching on clones tends to look shallow in one light and burned in another.

If the seller cannot tell you the reference and the movement number before you pay, that alone answers the question.

What "1:1 super clone" actually means

Nothing official. "Super clone," "Swiss made clone," and "1:1" are marketing phrases, not grades or standards. Any seller can print them on a listing for a $90 quartz watch. In practice the replica market splits into rough tiers: cheap quartz pieces with printed dials, mid-tier automatics using common Chinese movements, and higher-priced copies that mimic the layout of a real caliber closely enough to fool a casual glance through a display back. All three are counterfeits, and all three share the same problem: no Patek service center will touch them, so a repair means finding a watchmaker willing to work on an unknown movement.

Five things I check before anything else

  • Dial text. Look at the spacing between "PATEK PHILIPPE" and "GENEVE." Crooked baselines, uneven kerning, and letterforms that look slightly fat are common on replicas.
  • Case finishing. Genuine Patek cases have sharp transitions between polished and brushed surfaces. Clone cases are softer, with rounded edges where there should be a crisp line.
  • The movement. Patek builds its own mechanical calibers and finishes them to the Patek Philippe Seal standard, which replaced the Geneva Seal for the brand in 2009. Quartz exists in the current catalog, but it lives in the women's Twenty~4 line, not in a men's sports watch.
  • Thickness and weight. Replicas run thick. If a watch listed as a slim dress reference sits tall on the wrist, the case was built around a movement that does not fit the original dimensions.
  • Bracelet and clasp. On Nautilus and Aquanaut style bracelets, check how the end links meet the case and whether the clasp stamping matches the reference. This is where a lot of high-tier fakes give themselves away.

Price is a signal

Patek does not discount, and it does not sell through street dealers in a mall. A genuine reference in this part of the catalog trades in the tens of thousands of dollars, and it holds value. So a "new old stock" example at a third of market price is not a bargain, it is a warning. The same goes for a replica sold as a replica: a few hundred dollars does not buy a hand-finished Swiss movement, whatever the listing says.

Boxes, papers, and the archive question

Boxes and certificates are easy to reproduce, and a full set is not proof of anything. Patek does offer an Extract from the Archives, a paid document describing what the factory recorded about a specific watch when it was made. It is useful context. It is not an in-hand authentication of the watch in front of you, and sellers sometimes present it as one.

If you already bought one

Act quickly. If you paid by credit card or a platform with buyer protection, open a dispute and describe the item as counterfeit, not as "not as described." Keep the listing screenshots and the messages. If the watch came from overseas, expect the shipment to be the last you see of it if customs flags it, and expect no refund from a seller who has already been paid.

The legal side, briefly

In the United States, importing counterfeit goods and selling them are both illegal, and selling carries criminal penalties. Buying one for yourself is a gray area that still leaves you holding property you cannot legally resell. That is worth weighing before you click.