Short answer: a Ladybird 2138 first copy is a 26 mm ladies' date watch on a five-link Jubilee-style bracelet, and the four things that decide whether it looks right on the wrist are the movement, the case material, the crystal, and the bracelet taper. Listings photograph well from one angle, so before you pay, ask for a movement photo, a side profile shot, and the measured weight.
What the 2138 Reference Describes
Sellers use "Ladybird 2138" for a small dress watch with a date window at 3 o'clock, a fluted or smooth bezel, and a bracelet that tapers toward a folding clasp. The number in the listing may be factory shorthand rather than a caliber. Do not assume the watch holds a movement numbered 2138. Ask which movement family is inside and whether it is automatic or quartz. The genuine line it imitates has used calibers in the 2135 and 2235 family, so a seller who swaps reference numbers and caliber numbers has not opened the case.
What to Look For
Movement
Automatic versions at this size run at 21,600 vibrations per hour with 20 to 25 jewels and a 36 to 42 hour power reserve. Shake the watch near your ear in a quiet room. A rotor should spin with a soft whir, not a rattle or a scrape. Quartz versions tick once per second and cost less to service, but a sweeping second hand is the detail most people notice first. If sweep matters, pay for automatic and confirm it in a video with the caseback off.
Case, Bezel and Crystal
Ask for 316L stainless steel. Plated brass or zinc alloy shows up as unusual lightness and as pitting at the lugs after a few months of sweat contact. Sapphire crystal with an anti-reflective coat under the cyclops reads sharper than mineral glass, and it resists the hairline scratches that make a small watch look old. On gold-tone models, ask for the plating thickness. Three to five microns holds color for years with careful wear. A flash plate under one micron wears through at the crown and clasp within months.
Bracelet and Clasp
The bracelet is where low grades show. Solid end links sit flush against the case with no gaps or play. The five-link layout should taper from about 13 mm at the lugs to roughly 11 mm at the clasp. A stamped clasp flexes when you press it; a milled clasp does not. Check that the clasp closes with one firm press and that the safety fold stays put when you shake the watch by the bracelet.
Dial and Date
Look at the date font, the cyclops magnification (about 2.5 times is the norm), and the alignment of the date inside the window. A date that rides high or low, or a cyclops with visible glue haze, is the fastest tell at arm's length. Marker polish should be even, with no chipped edges on applied indices.
Sizing Ranges That Matter
- Case diameter: 24 to 28 mm suits wrists under 16 cm. A 31 mm case reads bigger and fits wrists above 16 cm.
- Lug width: 13 mm on most 26 mm cases, so strap swaps are limited.
- Thickness: 10 to 12 mm. Anything under 9 mm usually hides a thin quartz module.
- Weight with a full bracelet: 55 to 75 g in steel. Under 45 g points to hollow links or light alloy.
- Water resistance: 30 m handles rain and hand washing. Treat 50 m and 100 m as claims that only count if the caseback is screwed down and the crown seals.
Common Pitfalls
- Swiss Made stamps on a first copy. That phrase is tied to defined Swiss content thresholds, so treat it as marketing on this type of watch.
- Stock photos only. Ask for a live video with the watch on a ruler and on a scale.
- Oversized boxes and paperwork used to justify a higher price. Packaging adds nothing to the watch itself.
- No service history on an automatic. A clean and oil costs money, so factor that into the total.
- Listings that hide the caseback, the clasp interior, or the crown threads.
FAQ
Is 2138 a movement number or a model number?
In most listings it works as a model shorthand for a 26 mm ladies' date watch. Caliber numbers in this family run in the 2000 range, so ask directly instead of guessing from the title.
Automatic or quartz for a first copy?
Automatic if the sweeping hand and the rotor feel matter to you. Quartz if you want accuracy, low upkeep, and a thinner case. Both exist at this size.
Can I swim with it?
Only if the rating is 100 m or higher, the crown screws down, and the caseback gasket was fitted properly. A 30 m rating covers splashes at most. Water resistance ratings follow a published classification standard, and they describe pressure testing on a new watch, not a worn one.
How do I check the bracelet taper before buying?
Ask for the width at the lugs and at the clasp in millimeters. Solid links and a real taper are the two details that separate a convincing small watch from a flat one.
Anything else before I pay?
Confirm the return window, ask whether the bracelet ships with spare links, and check your local rules on owning and importing replica watches. Resale value on any first copy sits near zero, so buy it to wear it.