The short answer

Reference 322.10.42 is a stainless steel Omega Seamaster Aqua Terra 150M at around 41.5mm, so a replica of it stands or falls on four things: the teak deck dial texture, the case profile and lug curve, the bracelet end links and clasp, and the movement behind the sapphire caseback. Nail those and the watch reads correctly on the wrist from a normal conversation distance. Miss them and no amount of polishing saves it.

What the reference really covers

The 322.10.42 stem points to the Aqua Terra 150M line: steel case, smooth fixed bezel, screw-down crown, sapphire front and back, co-axial automatic inside. The suffix that follows, in the .20.01.001 style, only tells you which dial color and which bracelet the watch left the factory with. Two watches can share the 322.10.42 stem and look nothing alike. That matters when you shop, because a seller can quote the reference and still ship the wrong dial color or the wrong bracelet finish.

Dial and hands

The teak deck pattern is the whole point of this design and it is the hardest thing to fake at a low price. On a good replica the horizontal lines are cut, not printed, and they have depth you can see when you tilt the watch under a lamp. On a cheap one the lines are flat, evenly gray, and they vanish the moment you move off axis. Look for line spacing that stays consistent from the center to the edge of the dial, with no crowding near the date aperture.

Applied indices should be polished on the sides with clean white lume fill and sharp edges. The hour hand carries an arrow tip, and the frame around the lume should be thin. Chunky, blobby lume is the most common giveaway at this price point. The date window sits at 3 o'clock with a polished frame, and there should be no magnifier on the crystal. The date wheel itself should be white with black type, sitting flush rather than sunken into a dark hole.

Case and crystal

Check the case flanks from a side photo. The Aqua Terra has no crown guards, so the transition from brushed flank to polished bevel has to be crisp and straight. Lugs should curve down toward the wrist instead of sticking out flat. A case that measures correctly at 41.5mm but wears like a dinner plate usually has lugs that are too short and too thick.

Sapphire should be slightly domed with anti-reflective coating on the inside. Many replicas either skip the coating or use a blue-tinted layer that turns the dial purple in daylight. Hold the watch at an angle to a window and see how much of the dial disappears into reflection.

Bracelet and clasp

The Aqua Terra bracelet mixes brushed and polished surfaces, and the end links should meet the case with a tight, even gap on both sides. Hollow end links feel tinny and rattle. The clasp should close with one firm click, the safety catch should engage, and the engraved logo should be stamped deep enough to read with a fingernail. A genuine piece at this size on a full steel bracelet runs north of 150 grams. If a replica feels light in the hand, the case is thin or the bracelet is hollowed out.

Movement expectations

The genuine caliber in this family beats at 25,200 vibrations per hour. Most replicas use a Miyota 9015, an ETA 2824 clone, or a decorated A8500, and the first two run at 28,800. That difference is visible under a loupe and invisible on the wrist, so do not let it decide the purchase. What you should check is the rotor decoration, the finishing on the bridges, and whether the movement holder seats the movement without visible gaps. Ask for a timegrapher shot: anything outside roughly plus or minus 15 seconds a day needs regulating.

Quick inspection list

  • Teak lines cut with visible depth, evenly spaced, no flat printing
  • Applied indices with thin polished frames and clean lume
  • Date window framed, no cyclops, date wheel flush and centered
  • Straight case flanks, no crown guards, lugs angled downward
  • Inner AR coating without a blue or purple cast
  • Bracelet end links flush to the case, solid feel, firm clasp
  • Movement shot plus timegrapher reading before you pay

Water resistance

Treat any replica as splash resistant at best. Gaskets and crown threads on copies are not tested to the 150m the dial claims, and a single swim can end the watch. Keep it dry and it will last far longer.

Price tiers

Entry copies with a basic 2813 movement sit in the low hundreds and usually show flat dial texture. Mid tier watches with a Miyota 9015 or a decorated automatic land in the middle of the range and are where the value sits. The top tier adds better dial printing, sharper case finishing, and a more accurate bracelet. Pay for the dial and the case, since those are what people see.