The top pick for most buyers is the 44.2 mm stainless steel replica Portugieser Annual Calendar on a dark leather strap, chosen because it gets the hardest detail right: the three-window calendar cluster at 12 o'clock with day, month and date sitting at the correct size and spacing. I judge every example on four things: whether the month disc actually advances, how the apertures are cut and finished, whether the power reserve hand at 3 o'clock does anything, and how the case and dial hold up in daylight. Everything below is about telling a good build from a decorative one, because this is a watch where the calendar is the whole point.

Top pick: steel case, silver dial, triple aperture calendar

This is the version to ask for first. Steel keeps the price sensible, the silver-white dial shows every flaw in the printing, and the reference layout is the one people recognise. A good example reads clean at arm's length: applied numerals with sharp edges, leaf hands that taper properly, and a calendar cluster that sits flush with the dial rather than floating above it.

  • Pros: most produced variant, so parts and replacements are easier to source; the light dial exposes sloppy printing, which makes it easy to reject a bad unit from photos; works with a suit and with jeans.
  • Cons: every small error is visible on a pale dial; steel replicas attract more scrutiny than gold-plated ones because the genuine is a known steel reference; leather straps on budget builds are usually stiff and need replacing.

Use it for: a first serious dress watch, office wear, and any situation where someone might actually look at the dial up close.

Criterion: the aperture cluster at 12 o'clock

The genuine places day, month and date in three windows, with the month window smaller and centred between the other two. On replicas this is where corners get cut. Look for windows that are stamped rather than cleanly cut, day and date discs that sit at different depths, and a month disc whose printing is bolder or narrower than the day and date text.

  • Check: all three discs should sit on the same plane and change with a firm, single click of the crown.
  • Check: the frame edges around each window should be crisp, with no burrs or dark smears.
  • Check: font weight consistency across day, month and date.

Ask for a close macro photo straight on, not at an angle. Angled shots hide depth problems, and depth problems are exactly what you are looking for.

Criterion: does the annual calendar actually work

A true annual calendar tracks months of 30 and 31 days and only needs correcting once a year, at the end of February. Many replicas show a month in the window that never moves, or move the month with the date so it drifts out of sync. Before paying, request a short video: set the watch to the 30th, advance through midnight, and confirm the date jumps to the 1st and the month disc stays put. Then confirm the month advances when you cycle it deliberately with the pusher or crown.

  • Pros of a working calendar: the complication behaves like the watch it copies; no awkward explaining if the subject comes up.
  • Cons: annual calendar modules add thickness and cost, and a badly finished module is the most likely thing to fail in the first year.

Use it for: anyone who wears the watch daily and sets it from the crown instead of leaving it in a box.

Criterion: power reserve hand and small seconds

The reference carries a power reserve indicator at 3 o'clock and small seconds at 9. On replicas, the running seconds subdial almost always works, while the power reserve hand is often fixed or simply mirrors the mainspring state of a much shorter movement. If the seller cannot show the reserve hand moving across its arc as the watch winds down, treat it as decorative and price your expectations accordingly.

  • Pros: a functioning reserve hand makes the watch feel complete when you pick it up after a weekend.
  • Cons: a decorative hand is a permanent reminder of what you bought every time you glance at the dial.

Criterion: case, dial and hand finishing

Portugieser cases are slim-bezelled and mostly polished, with a broad flat band and short lugs. Replica tells here are a bezel that looks slightly thick from the side, lugs that curve too sharply, and a caseback engraving that reads shallow. On the dial, look at the lacquer under direct light: it should look deep and even, not grey or dusty. Hands should be flat and cleanly cut with no burrs on the leaf tips.

  • Worth paying more for: correct bezel proportions, a dial with depth, and hands with proper polishing.
  • Not worth paying more for: upgraded straps from the seller, fancy boxes, and certificates, none of which change the watch.

Option: rose gold case with a blue or silver dial

The warm-case version looks richer and photographs well, but plating is a long-term risk: edges and the caseback rim wear first. If you choose this route, ask whether the case is plated or solid gold-coloured steel, and inspect the lug tips and crown area in photos.

  • Pros: strong presence with formal wear; blue dial variants hide slight printing inconsistencies better than silver.
  • Cons: plating wear is not repairable at home; the finish rarely matches the genuine's tone under warm light.

Use it for: evening and event wear, or a collection where the steel version already exists.

Option: entry tier and what you give up

Cheaper builds usually save money in three places: the calendar module, the dial printing, and the strap. Expect a month window that is either static or slaved to the date, softer printing on the numerals, and a stiff embossed strap. That can still be a reasonable buy if you want the look and accept the trade.

  • Pros: lowest entry point; good for testing whether the 44.2 mm size suits your wrist.
  • Cons: the complication is the reason to own this watch, and the entry tier often removes it.

Pre-purchase checklist

  1. Macro photo of the calendar cluster, straight on.
  2. Video of the date changing from the 30th to the 1st.
  3. Video of the month disc advancing on its own.
  4. Video of the power reserve hand moving across the arc.
  5. Side profile shot to judge bezel thickness and case height.
  6. Caseback photo to check engraving depth and rotor decoration.
  7. Confirmation of warranty terms and what happens if the calendar module jams.

Bottom line

Buy the steel silver-dial version, insist on a working month disc, and accept a decorative power reserve hand only if the price reflects it. The dial and the calendar cluster are what people see; the movement is what you live with. Get those two right and the rest is a strap swap away.