Short answer
A replica IW323712 is a copy of a stainless steel IWC sports watch, and the ones worth owning sit in the $280 to $450 band. Under $150 you get a stamped bracelet, a hollow case feel, and a rotor you can hear from across a desk. Past $500 you are mostly paying for a dealer's story. The reference itself is a plain, well-finished automatic with a date, which is exactly why it is hard to fake properly. A simple dial has nowhere to hide.
The spec baseline you are matching
The genuine watch is a mid-size steel case, about 40mm across, with a screw-down crown, sapphire crystal, a clean three-hand dial and a date at 3 o'clock. Case finishing is the whole personality of the piece: brushed flanks, polished bevels, crisp edges where the two meet. None of that is exotic engineering. All of it is expensive to reproduce at scale.
Where replicas split into tiers
- Under $120: plated cases, mineral glass, loose end links, painted markers. Skip these unless you want a costume piece.
- $150 to $250: solid steel case, decent dial print, a Chinese automatic that keeps time but feels rough when wound.
- $280 to $450: the sweet spot. Proper brushing, tight bracelet tolerances, applied markers, a clone of a Swiss automatic with smooth winding.
- $500 and up: marginal gains at best. Ask what changed besides the price.
The movement question
Most good copies run a Chinese clone of an ETA 2892 family caliber. That is a thin, proven design, and a well-assembled clone will hold decent time. What separates a good one from a bad one is regulation and cleanliness out of the box. Ask for a timegrapher reading with rate, amplitude, and beat error. A seller who cannot produce one is guessing. I also ask whether the date changes crisply at midnight or drifts through a two-hour window, since that tells you a lot about assembly care.
Case and bracelet, where cheap copies confess
Run a thumb along the lug edges. Real quality is a sharp, even line; cheap work is rounded and soft because it was polished by hand for too long. Look at the gap where the bracelet meets the case. A hairline gap on both sides is normal. A wedge on one side means the case was machined loosely. Then check the clasp: it should snap with a firm click and sit flush when closed. Squeaky clasps and rattling end links are the fastest tells on the wrist.
Dial, hands, and the date
Applied markers should sit level and catch light on their edges. Printed text should be sharp under a loupe, not fuzzy at the serifs. The date wheel should be centered in its window with even spacing on both sides. Hands matter too. Flat, painted hands look wrong; properly faceted hands with clean lume fill look right. On a watch this plain, a crooked marker at 6 o'clock ruins the whole thing.
Water resistance and daily wear
Treat any replica as splash resistant unless the seller pressure-tested it. A screw-down crown with real gaskets helps, but the caseback seal and tube quality decide the rest. I would not swim in a $300 copy without a test first. For daily wear, wipe the case with a soft cloth, keep the bracelet rinsed of sweat, and avoid wearing it in a hot shower where heat works on the gaskets.
Questions worth asking the seller
- What movement is inside, and can you send a timegrapher photo?
- Are the bracelet pins solid or split pins?
- Is the crystal sapphire or mineral?
- What is the return window if the date misaligns?
- Can you send a short video of the seconds hand sweep and the date flip?
Bottom line
Pay for case finishing and bracelet fit, not for a label on the listing. A $300 replica IW323712 with clean brushing, a regulated clone movement, and a clasp that closes properly will read better on the wrist than a $600 one with a glossy, over-polished case. Buy the details, and buy from someone who answers questions with photos.