The top pick for checking a fake IW544713 is the case back. Reference engraving, font weight, and engraving depth are the details replica makers get wrong most often, and they are the easiest thing to photograph and compare before money changes hands. The criteria used throughout this guide are simple: verify the reference against IWC's own published data, inspect physical details at magnification, and treat box and papers as supporting evidence rather than proof of anything.

Start With the Reference Number

IWC reference numbers follow a fixed pattern: the letters IW followed by six digits. On a genuine IW544713 the stamping reads cleanly left to right, with even spacing between every character and no crowding where the digits meet the letters. Replica cases are often stamped from a mold copied off a photograph, so the spacing drifts and the digits sit slightly heavy or light compared with the rest of the line.

Pros

  • Requires no tools and no opening of the case
  • Works from a clear macro photo sent by a seller
  • Catches the most common replica error in one look

Cons

  • Some replica makers copy the stamping accurately
  • Worn or polished cases blur the original engraving on genuine watches

Case Back and Engraving Depth

Genuine IWC case backs are engraved or laser marked with a crisp edge that throws a small shadow under angled light. Copies usually show a shallow, rounded groove because the mold wore down before the case was cast. Run a fingernail across the markings on a genuine watch and you feel a defined step. On a fake you feel a soft dip. Check the serial as well: it should match the paperwork and appear in the same style as the reference number.

Pros

  • Reveals casting quality that photos hide
  • Serial comparison exposes mismatched paperwork fast

Cons

  • Needs the watch in hand or a sharp close-up
  • Polishing by a previous owner can soften genuine engraving

Dial Printing, Hands, and Markers

Look at the dial under a loupe or a phone macro lens. Genuine printing sits flat with sharp edges on the numerals and the brand name, and applied markers sit level with no gaps at the base. Replica dials show thicker ink, slightly fuzzy borders, and markers that sit a fraction high or lean away from the dial. Hand finishing matters too: genuine hands have polished bevels that catch light along the full length.

Pros

  • Visible in normal daylight without disassembly
  • Dial flaws are hard to correct on a copied dial blank

Cons

  • Dial variations exist across production batches
  • Refinished genuine dials can look wrong for honest reasons

Movement and Case Construction

The movement is the hardest part of a watch to copy well. A watchmaker can open the case back and confirm the finishing, the rotor decoration, and the engraving on the bridges. Case construction gives it away too: check crown position, pusher alignment if the watch has them, and case thickness against published figures. A copy often runs slightly thick because the case was built around a stock movement rather than a purpose-built caliber.

Pros

  • Most reliable single check available
  • Confirms service history and any swapped parts

Cons

  • Requires a watchmaker and a small fee
  • Not practical before a remote purchase is agreed

Box, Papers, and Service Records

Paperwork supports a story, it does not prove one. A genuine IW544713 sold years ago may arrive with no box at all, while a fake often ships with a full set because the packaging is cheap to produce. Read the printed reference and serial on the card, then compare both against the case. Numbers that match are a good sign. Numbers that match on a card printed with fuzzy type and uneven spacing are not.

Pros

  • Fast way to flag a mismatched set
  • Service papers can confirm a real watchmaker worked on the piece

Cons

  • Cards and boxes are widely copied
  • Missing paperwork is normal on older genuine watches

Where Replica Sellers Slip Up

Listings for this reference usually fail in the same few places: the weight feels light for the case size, the bracelet end links do not sit flush against the lugs, the crown screws down with a gritty feel, and the date font is slightly narrow. Ask for photos of the case back, the crown side, and the clasp in daylight. Sellers who know their watch is genuine will send them. Sellers who stall are telling you something.

Which Check Fits Your Situation

  • Buying from a private seller online: lead with the case back and serial comparison, then request a movement photo before paying.
  • Inspecting a watch you already own: start with dial printing and markers, since those need no tools.
  • Spending serious money: pay a watchmaker to open the case. It is the only check that settles the question.
  • Buying a disclosed replica: judge it on the tells listed above so you know what you are getting and what it is not.

No single detail proves authenticity. Stack the checks, compare against verified photos of the same reference, and walk away when a seller resists a simple request.