Quick answer

A replica "Speedy Tuesday" is a copy of the 2017 Omega Speedmaster Limited Edition that Omega built around an Instagram hashtag. The copies come in three rough tiers: quartz models under $100, mid-range automatics running a Seagull ST19 chronograph movement at roughly $200 to $400, and "super clone" builds that push past $600. Every one of them is a counterfeit. None use the Lemania-derived caliber 1861 that sits inside the real watch, and importing one into the United States is illegal no matter what a seller claims about customs.

Where the name comes from

Robert-Jan Broer of Fratello Watches started posting a Speedmaster every Tuesday under the hashtag #SpeedyTuesday. It caught on with collectors, and in 2017 Omega answered with a 2,012-piece limited edition. The watch took its radial subdial numerals from the Alaska III project, kept the 42mm steel case, and engraved the caseback with the model name and an individual number.

That backstory matters for the replica market, because it means the genuine watch is scarce by design. Only 2,012 exist. The demand that scarcity creates is exactly what counterfeiters sell into.

What the copies get wrong

The Speedmaster is a harder watch to fake well than a Submariner, and the reasons are mostly mechanical.

• Subdials. The real watch has a running seconds hand at 9, a 30-minute counter at 3, and a 12-hour counter at 6. On cheap quartz copies those registers are often decorative, meaning the hands either sit still or move on a fixed schedule.
• Chronograph feel. The caliber 1861 uses a lateral clutch and a cam-actuated pusher. It has a specific resistance and a slight bite when you start it. An ST19 feels different, and a quartz copy has no feel at all.
• Dial and printing. Radial numerals on the Speedy Tuesday are set at an angle toward the center. Copies frequently print them flat, and the lume plots end up the wrong shape or the wrong shade of white.
• Case finishing. The genuine case mixes brushed flanks with polished bevels that catch light along the lugs. Replicas tend to soften those edges or polish surfaces that should be brushed.
• The caseback. Engraving depth and letter spacing are usually the fastest tell. So is the absence of a real limited-edition number tied to a 2,012-piece run.

The tiers, honestly described

Under $100 you get a quartz watch with a Speedmaster-shaped case, a mineral crystal, and a dial that photographs better than it looks in person. The bracelet usually rattles and the clasp is stamped metal.

From about $200 to $400, the ST19 automatic shows up. It is a legitimate Chinese chronograph movement descended from the Venus 175, and it actually works. Watches in this band often have a sapphire crystal and a decent bracelet. They still miss on case profile, pusher shape, and dial detail.

Above $600, sellers talk about "1:1" and "super clone." What you get is better steel, closer dimensions, and sometimes a genuine-looking movement plate. What you do not get is a column wheel, Omega's finishing, or any path to service through Omega. Independent watchmakers will work on a Seagull movement all day. They will usually decline to touch a fake Omega because parts do not exist in the supply chain.

The legal side in the US

Counterfeit watches are prohibited merchandise. US Customs and Border Protection seizes them routinely, and a seizure letter does not come with a refund from the seller. Buying one for personal use can carry civil penalties, and reselling one is a straightforward trademark violation. This applies to a $60 quartz copy and a $700 "super clone" equally. There is no threshold where a counterfeit becomes legal to import.

What to do instead

If the appeal is the look, several brands sell honest mechanical chronographs with a similar tri-register layout for the price of a mid-tier replica. If the appeal is the Speedmaster itself, a used genuine reference in steel costs more but holds value, can be serviced, and does not come with a customs risk.

If you simply want to understand what the real Speedy Tuesday is, the reference material is free and better than any replica listing. Omega documents the edition, and the collector coverage from 2017 explains the Alaska III connection far better than a product page will.