The top pick for most buyers searching a fake IW371619 is the top-tier super clone: about a 41 mm steel Portugieser Chronograph case, a vertical two-register dial, and an automatic chronograph movement finished to imitate IWC calibre 69355. The criteria that decide whether a replica is wearable or wasted money are dial geometry, case proportions, crystal and case finishing, movement behaviour, pusher feel and strap quality. Everything below sets the genuine reference as the benchmark first, then shows how each tier of fake measures up against it.
What the genuine IW371619 gives you as a benchmark
You cannot judge a copy without the original numbers. The IW371619 belongs to the modern Portugieser Chronograph family: a stainless steel case of roughly 41 mm across and about 13 mm thick, sapphire crystal front and back, and a dial with two registers stacked on the vertical centre line. Running seconds sit at 6 o'clock, the chronograph minutes counter sits at 12, and there is no date window anywhere on the dial. The hands are leaf shaped, the numerals are applied rather than printed, and the caseback is an exhibition window over an automatic chronograph with a power reserve in the region of 46 hours. IWC's own reference pages list these specifications, so a seller quoting different numbers is describing a different watch.
Keep three facts in your head while you shop: two subdials, no date, exhibition back. Most bad fakes fail at least one of them.
The three tiers of fake IW371619 on the market
Tier 1: budget quartz and entry automatics
These carry the reference number in the listing but share little else with the watch. Dials are printed, cases are plated or roughly machined, and the chronograph is quartz or a low-grade automatic with a stamped rotor.
- Pros: lowest cost, easy to replace, acceptable if you only need a stand-in for photos or a costume.
- Cons: subdial centres drift off the vertical line, some builds add a date window at 3 o'clock that the genuine watch does not have, pushers feel gritty, and a quartz seconds hand ticks, which no automatic should do.
Tier 2: 7750-based automatics
Mid-tier fakes use a clone of the Valjoux 7750 chronograph, the architecture that IWC's 69000-series chronographs descend from. That shared ancestry is why the pusher feel and the sweep of the chronograph seconds can be convincing on this tier. The catch is layout: a stock 7750 places a subdial at 9 o'clock, and the Portugieser has nothing there.
- Pros: genuine automatic winding, smooth sweeping seconds, crisper pushers, and any competent watchmaker can service the movement.
- Cons: cheap builds leave a blanked or dead subdial at 9 o'clock, the case is often a millimetre or two thicker than the real thing, and a date wheel sometimes survives under the dial.
Tier 3: top-tier super clones
The best replicas reproduce the movement layout rather than fighting it: small seconds at 6, chronograph minutes at 12, no date, column-wheel-style pusher action, and a decorated rotor visible through the caseback. Case finishing alternates brushed flanks with polished edges the way the genuine case does, and the dial furniture is applied.
- Pros: correct dial geometry, correct pusher sequence, sapphire crystal with anti-reflective coating, and proportions that hold up beside a real Portugieser at arm's length.
- Cons: the highest price of the three tiers, service support is limited, and hand alignment on individual units still varies, so buy from a seller who shows photos of the actual watch.
Eight checks that separate a good fake from a bad one
- Subdial line: the centres of both registers should sit on one vertical line through the middle of the dial, with even spacing above and below the pinion.
- Date window: none. A window at 3 o'clock, a cyclops, or a phantom date position on the crown are immediate disqualifiers.
- Hands and markers: applied numerals with clean edges, leaf hands that reach the printed track, no fuzzy printing on the brand text.
- Case and lugs: thin bezel, short curved lugs, a mix of brushed and polished surfaces rather than one uniform shine.
- Crystal: slight dome, clear anti-reflective coating, no milky haze at an angle.
- Chronograph behaviour: pushers start, stop and reset with a distinct click, and the reset snaps both counters to zero without creep.
- Caseback: exhibition window showing finished bridges and an engraved reference, not a solid steel back with a sticker.
- Strap or bracelet: even stitching, leather that creases rather than cracks, end links that meet the lugs without gaps.
Red flags in listings and photos
- Stock catalogue images instead of photos of the actual unit.
- A price far below the rest of the market for the same tier.
- Sellers who call a quartz watch a "Swiss automatic" or refuse a short video of the chronograph running.
- Water resistance claims above what a screw-down caseback and gaskets can honestly deliver.
- Reference numbers that blend two different IWC models.
Pros and cons of buying any replica IW371619
- Pros: the look and proportions of a Portugieser Chronograph without a five-figure outlay, freedom to wear it daily without insurance worry, and access to colourways that are scarce on the secondary market.
- Cons: no manufacturer warranty or authorised service, resale value close to nothing, and legal exposure in countries that restrict importing counterfeit goods bearing a protected trademark.
Which tier fits which buyer
If the watch is a costume piece for one evening, tier 1 does the job and nothing more. If you want a mechanical chronograph you can actually wear and have serviced locally, tier 2 is the value point, provided you inspect the 9 o'clock position. If the dial geometry, pusher feel and case finishing have to hold up under close inspection, tier 3 is the only honest answer, and it is worth paying for a seller who photographs the exact watch you will receive. Whichever tier you choose, ask for a running video of the chronograph before you pay, because that single clip exposes more about a fake IW371619 than any spec sheet.