The Blancpain Villeret Ultraplate 6104-2930-55A is a 29.2 mm dress watch in red gold with a diamond-set bezel, a black dial with Roman numerals and diamond indices, a manual-wind movement and a leather strap. It belongs to Blancpain's Villeret collection, the brand's classical line, and it is a small, formal size rather than the larger cases common elsewhere in the range. This guide covers the specifications, what the Villeret name means, how a 29.2 mm case wears, why a manual-wind movement suits a dress watch, how it compares with other Villeret models, price context in 2026, and what to check before buying. Bizak & Co. sources this reference to order; the Blancpain Villeret collection shows related models.
Last reviewed on September 29, 2026 by Filip Biczak. Prices are dated observations, not quotes.
Blancpain Villeret Ultraplate 6104-2930-55A specifications
| Attribute | 6104-2930-55A |
|---|---|
| Reference | 6104-2930-55A |
| Collection | Villeret, Ultraplate |
| Case | 29.20 mm, red gold, bezel set with diamonds |
| Dial | Black, Roman numerals with diamond indices, as described in the catalogue listing |
| Movement | Manual-wind mechanical; confirm the calibre number, power reserve and finishing against Blancpain's documentation for this reference |
| Strap | Leather |
| Condition | Brand new, per Bizak's catalogue listing |
Use the full reference, 6104-2930-55A, when you ask Blancpain or an authorised retailer to confirm the specification, because the suffix identifies the exact dial, bezel and strap combination. We do not state a diamond weight, thickness or water resistance figure here, since these are not in our catalogue data and should be read from the brand's own sheet for this reference.
What does Villeret mean at Blancpain?
Villeret is the village in the Swiss Jura where Blancpain was founded in 1735, and the name now labels the brand's classical collection. Where the Fifty Fathoms carries the brand's dive-watch story, launched in the early 1950s, the Villeret line is about restrained dress watches with Roman numerals, slim cases and mechanical movements. Blancpain also has a long-quoted rule that it has never made a quartz watch, which makes even a small ladies-sized case like this one a mechanical piece rather than a battery model.
The Ultraplate name signals a slim profile, which is part of why this watch works as a formal piece. A thin case on a small diameter slips under a cuff and sits close to the wrist, and the manual-wind movement helps keep the profile low because it does not need a rotor. The diamond bezel changes the register from plain dress watch to evening jewellery watch without altering the Villeret layout.
How does a 29.2 mm case wear?
At 29.2 mm, this is a small watch by current standards, and it will look very different on different wrists. On a slender wrist it reads as a classic proportioned dress watch. On a larger wrist it will look delicate, which is often the intent. Most buyers for this reference are choosing it because they want a compact, formal watch in precious metal, not a statement sports watch.
Red gold is warmer than white gold or steel and pairs well with black. The contrast between red gold, black dial and white diamonds is high, so the watch reads clearly even at its small size. Red gold is also a softer material than steel, so it will show fine scratches over time. If you plan to wear it daily, expect a slow patina; if you keep it for evenings, it will stay crisp for years.
Why does a manual-wind movement suit a dress watch?
A manual-wind movement is powered only by turning the crown. You wind it once a day, usually in the morning, until you feel resistance. There is no rotor, so the movement can be thinner and its finished surfaces can be seen through a display back without a weight obscuring them. For a small dress watch worn on occasion, manual winding is often a benefit: you set the time, wind the watch and put it on, and the ritual is part of the ownership.
It also means the watch stops if you leave it unworn for longer than its power reserve. That is normal, and it will restart when you wind it and set the time again. Turn the crown gently and stop when you feel firm resistance; forcing it past that point is the usual way to damage a hand-wound movement. Servicing intervals for a mechanical Blancpain follow the brand's own guidance, so ask for the current recommendation in writing when you buy.
6104-2930-55A vs other Villeret watches: how do they compare?
| Ultraplate 6104-2930-55A | Villeret 8 Jours 6630-1531-55B | |
|---|---|---|
| Case | 29.20 mm red gold, diamond bezel | 42 mm white gold, cambered dial |
| Dial | Black, Roman numerals | White Grand Feu enamel |
| Strap | Leather | Alligator leather |
| Character | Small, formal, jewellery leaning | Large, traditional, complication-led |
| Bizak catalogue, September 29, 2026 | US$25,000, sourced to order | US$31,999, sourced to order |
| Catalogue entry | 6104-2930-55A | 6630-1531-55B |
The two watches share a collection name and little else. The 8 Jours is a large traditional watch built around an eight-day power reserve; the Ultraplate is a small, elegant piece for formal wear. If you want the Villeret dial language at a modern size, look at the larger references. If you want a small precious-metal watch that dresses up, the 6104 is the more direct answer.
How much is the Blancpain 6104-2930-55A? Price context in 2026
Blancpain sets retail prices and changes them, so we do not quote a retail figure we cannot check against the brand's current price list. Ask an authorised Blancpain retailer for the current retail price of the reference. What we can state is Bizak's own catalogue: on September 29, 2026 the sourced catalogue listed the 6104-2930-55A at US$25,000, brand new, sourced to order. That is one dated listing, not a market median and not a quote, and the final price for a specific watch is confirmed before purchase.
On our catalogue the reference sits in the US$20,000 to US$50,000 band, which you can browse in the watches $20,000 to $50,000 collection. For a diamond-set watch, the price is shaped by the metal, the quantity and quality of the stones, and the finishing, so compare like with like: same reference, same condition and the same accessories.
How are the diamonds on the bezel judged?
Diamond quality is described by the four Cs: cut, colour, clarity and carat weight. The Gemological Institute of America explains how those grades work on its diamond quality factors page. On a watch bezel the stones are small and are chosen for consistency more than for individual size, so the useful checks are practical: an even sparkle across the setting, matching stones, secure prongs or settings and no missing or chipped diamonds.
The brand's own documentation is the place to find stone details for this reference. If a dealer quotes a carat weight or grade, ask where the number comes from. We do not state a weight for this watch because it is not in our listing data.
What should you check before buying a Villeret Ultraplate?
- Reference number. The documentation and the watch should both show 6104-2930-55A.
- Bezel stones. Turn the watch under bright light and look for gaps, uneven stones or loose settings.
- Case surfaces. Red gold marks easily; look for hairlines, especially near the lugs and the edge of the bezel.
- Dial condition. The black surface should be even, and the Roman numerals and diamond indices should be aligned and crisp.
- Winding and setting. The crown should wind smoothly and the hands should set without catching.
- Strap and buckle. Check the strap is the right size and its buckle matches the case metal.
- Papers and warranty. Ask what the warranty covers and from what date. Our authenticity guarantee page explains what we verify before a sale.
Where does this watch fit against other dress watches?
Small dress watches in precious metal are a category of their own, and the reasons to buy one are usually personal rather than investment-led. For readers thinking more broadly about high-end dress and sports watches in the same price band, our Patek Philippe watch prices guide and the Audemars Piguet watch prices guide give context, and the Blancpain collection lists what we can source from the brand. For auction context on Swiss watchmaking, see Phillips watches and Sotheby's watches, and for the Swiss Made rules, the Federation of the Swiss Watch Industry.
Quick answers
How much is the Blancpain Villeret Ultraplate 6104-2930-55A?
Bizak's sourced catalogue listed it at US$25,000 on September 29, 2026, brand new and sourced to order. That is a dated observation, and the final price is confirmed before purchase.
What size is the Villeret Ultraplate 6104-2930-55A?
The case is 29.20 mm in red gold with a diamond-set bezel. That is a small, formal size that wears close to the wrist.
Is the Villeret Ultraplate 6104 a manual-wind watch?
Yes. The movement is manual-wind, so you turn the crown to power it, typically once a day, and there is no rotor.
Does the 6104-2930-55A have diamonds?
Yes, the red gold bezel is set with diamonds. The dial is black with Roman numerals and diamond indices as listed.
Does Bizak hold the 6104-2930-55A ready for delivery?
No. Bizak sources it to order, and we confirm the specific watch, photographs, papers and final price before you commit.
Request a Blancpain 6104-2930-55A sourcing quote
If you want this reference, send the details through our sourcing enquiry form, with your budget and timing. See the catalogue entry for the Blancpain Villeret Ultraplate 6104-2930-55A, browse the Villeret collection or the rose gold watches collection, or sell or trade a watch toward it.
Related reading: Patek Philippe watch prices · Audemars Piguet watch prices · Patek Philippe vintage authentication · Watch nicknames explained.
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