The Rolex Submariner reference 5512 is a vintage dive watch made from 1959 into the late 1970s, and a fake 5512 is a counterfeit built to imitate it. Because the 5512 is a chronometer-rated vintage model with a specific case shape, dial printing, and movement, most replicas miss the small details that collectors read first. Authentication therefore comes down to comparing those details closely rather than trusting a seller's description.

What the 5512 actually is

The 5512 sits at the top of the vintage no-date Submariner line. It shares the 40mm Oyster case and rotating dive bezel with the 5513, but it was certified as a chronometer, which is why its dial carries four lines of text instead of two. Early examples used Caliber 1530, and later production moved to Caliber 1570. Production ran from 1959 to roughly 1980, so a genuine watch can look very different depending on the year.

• Case: 40mm Oyster, screw-down crown, crown guards
• Dial: glossy gilt or matte black, four lines of text, lume plots
• Depth rating: 200m / 660ft
• Movement: Caliber 1530 early, Caliber 1570 later, both chronometer rated
• Bezel: rotating steel bezel with an aluminum insert

Why replica makers struggle with this reference

Most replica production today targets modern ceramic Submariners, where a machined case and a ceramic insert can be copied with reasonable accuracy. The 5512 offers no such shortcuts. Its value sits in printed dials, aged tritium, hand-finished case bevels, and a movement that has to look correct through a loupe. A counterfeit 5512 usually comes from an older or lower-tier factory, and that shows in the printing, the case profile, and the finish of the hands.

Check 1: the dial

The dial is where most fakes fail. Genuine 5512 dials were made in two main styles: a glossy gilt dial with a chapter ring in the early years, and a matte dial with painted printing from the mid-1960s onward. Look for these points:

• Coronet shape: the crown logo should have the correct proportions and open areas, not a blobby silhouette.
• Printing quality: on gilt dials the text is raised and glossy under light, on matte dials it sits flat and slightly textured.
• Depth rating order: many early dials read 200m=660ft, while later dials switch to feet first. A mismatch between dial era and case serial is a warning sign.
• Lume plots: tritium on a genuine watch ages unevenly and sits in the plot with a slightly domed surface. Replica lume often looks uniform, flat, or artificially yellowed.
• Font details: serifs, the shape of the 4, and the spacing between letters are common giveaway areas.

Check 2: crown guards and case

Early 5512 cases have pointed crown guards, often shortened to PCG in collector listings, before the guards became rounder later in production. Replica cases tend to have guards that are too thick, too symmetrical, or shaped without the correct taper. Also inspect the lugs: many genuine examples have drilled lug holes, and the bevels along the lug edges should be crisp and consistent. Serial and reference numbers between the lugs must be stamped, not laser etched, and should match the dial era.

Check 3: bezel and insert

The bezel insert on a genuine 5512 is an aluminum ring with printed or engraved graduations that vary by production period. Look at the font weight, the shape of the triangle at twelve, and the pearl pip. Replica inserts often use a pip that sits too high, numerals that are too thin, or a finish that looks new next to an aged dial. The bezel should rotate with firm, defined clicks and settle precisely at each marker.

Check 4: movement and hands

Ask for a clear photo of the movement. A genuine Caliber 1530 or 1570 shows crisp engraving, correct bridge shapes, and finishing that a replica movement cannot match. The hands should be Mercedes style with correct proportions and lume that matches the dial in color and age. On a 1570 movement, the seconds hand hacks when the crown is pulled out, which is a quick functional test.

Red flags in a listing

• Photos that are small, blurry, or cropped away from the dial and case flanks.
• A price far below the current market for the reference and condition.
• Claims of an unpolished case with no macro photos of the bevels and lugs.
• Parts from different eras combined into one watch, often called a franken watch.
• Reluctance to show the movement, the serial, or the inside of the caseback.

Questions to ask before you buy

1. What is the case serial range, and does it match the dial style?
2. Which caliber is inside, and when was it last serviced?
3. Are the hands, insert, and crown original to the watch?
4. Can you provide macro photos of the dial printing, crown guards, and lug holes?
5. Does the watch come with documentation or a service record?

Terms matter as well. A replica is a counterfeit made to look like the real thing, a franken watch is a genuine watch assembled from mixed parts, and a genuine 5512 is an original Rolex. Sellers who blur those categories are worth avoiding, and a watch described as a fake should never be priced like an original.