Here are the essential features of this high‑end modified AP skeleton watch:
1. Model & Rarity
- Model: Audemars Piguet 15412 BC Ruby
- A skeleton (openworked) watch with diamonds and gemstones (rubies) on the bezel and case
- Genuine secondary market price: several million yuan (very high)
2. Material & Weight
- Everything visible (bezel, crown, middle case, caseback, strap, buckle) made from real precious metal AU750 18K white gold (often referred to as “platinum” in look)
- Total weight: 241.7 grams – exactly matches the genuine
- Only real precious metal can achieve this weight – a steel shell would weigh just over 100 grams, making the weight telltale immediately
3. Case & Bracelet Craftsmanship
- Case developed using CNC original data (scanned from a genuine watch)
- Key quality indicators:
- Brushed finish and polished surfaces correct
- Thickness matches genuine
- Gradual thinning of the strap (thicker at top, thinner at bottom) – consistent with original
- This level of craftsmanship is described as “a really good case”
4. Gemstone & Diamond Setting
- Gemstones (rubies) and diamonds are set based on original data
- Critical setting detail: Cross‑section shows a gap in the front and a gap in the back – this matches the genuine setting style (not large, solid stones)
- Each gemstone is chamfered into a quadrilateral with chamfered and polished setting – very nice, matches original craftsmanship
- Diamonds are CVD lab‑grown diamonds (synthetic) – used for hour markers and indices
- Fire and texture under light are very strong
5. Dial / Skeleton Indices
- Hour markers are inlaid with diamonds and red gemstones (rubies)
6. Movement – Key Highlight
- Uses a custom‑made domestic movement (based on AP’s 3132 calibre)
- Features a true non‑regulated (unregulated) structure
- Real double balance wheel – one balance wheel on the front, another on the back; both equipped with counterweights
- This double‑balance‑wheel craftsmanship already achieves complete consistency with the original movement
- The movement is a skeleton/openworked design
- Automatic rotor on the back is custom‑made from 18K rose gold – matches original material and color
7. Overall Restoration Goal
- Comprehensive restoration of:
- Material (18K white gold)
- Weight (241.7g)
- Polishing and brushing process
- Movement architecture (double balance wheel, unregulated)
- Diamond/gemstone setting process
- Claim: When worn without sending to a professional testing institution, flaws are very, very small
- Ultimate purpose: help you save money compared to buying a genuine multi‑million yuan AP skeleton
8. Other Models Mentioned as Customizable
- Steel case 15407
- Ceramic 15416
- Precious metal 15412 (this one)
- Various styles (mirror finish, double‑gold, etc.) – all can be made via CNC original data development
9. Key Quality Checklist for AP 15412 BC Ruby
| Component | What to Look For |
|---|---|
| Weight | ~241.7g – requires real 18K white gold |
| Case material | AU750 18K white gold (not steel) |
| Strap taper | Gradual thinning (thicker at lug end, thinner at clasp) |
| Gemstone setting | Front and back gaps; stones chamfered into quadrilaterals; polished setting |
| Diamonds | CVD lab‑grown – fire and texture strong |
| Movement | Double balance wheel (front + back, with counterweights); unregulated structure; skeletonized |
| Automatic rotor | 18K rose gold (not copper or plated) |
| Finishing | Brushing and polishing consistent with genuine |
This modified AP 15412 BC Ruby skeleton represents the absolute peak of the replica/modification craft among the nine videos reviewed. It combines real 18K gold (241.7g), a functionally complex double‑balance‑wheel clone movement, correct gemstone setting with genuine‑style gaps, and an 18K rose gold rotor. The fact that the movement achieves a “true unregulated structure” and “double balance wheel with counterweights” is extraordinary for a replica – most factories cannot or will not attempt this level of mechanical replication.
For collectors who desire AP’s openworked Royal Oak – a watch that is not only expensive but also extremely difficult to obtain (genuine examples often require VIP allocation) – this custom build offers a rare opportunity. The intrinsic gold value provides a floor, while the movement craftsmanship provides functional pleasure.
Hello everyone, this is Bozwatch’s Reviews.
Every watch is a work of art, a testament to time, and I am a fanatic believer in them. He wants to avoid pitfalls on his watch-collecting journey and find his own mentor.
At the request of fans, they wanted to learn about AP’s high‑end watch series – specifically, the play of skeleton watches. They asked me to take some videos to explain. Well, today it’s here.
The model is AP’s 15412 BC Ruby. Its price on the secondary market is several million yuan. At this price level, you can see the bezel and the lugs are set with diamonds and gemstones. It looks really beautiful in the light – shining brilliantly.
In the past, when we played with this skeletonized AP “Two‑Gold” (openworked), we had to use the original 3120 movement. But now, our movement is a cost‑effective modified movement. It is custom‑made – a truly non‑caliber (free‑sprung) movement, and it has a true double balance wheel.
Some of you may not know about double balance wheels. What does it mean? A double balance wheel means it has a balance wheel on the front and also a balance wheel on the back. You can see how three‑dimensional it is – a double‑layered balance wheel structure. And on the balance wheels, counterweights are installed. This type of free‑sprung double balance wheel can now achieve complete consistency with the original movement.
For this watch, it is made of real precious metal – AU750 18K white gold (platinum color). Everything you can see with your naked eye – its bezel, its crown, its middle case, the caseback, its strap and buckle – are made of genuine 18K white gold.
As usual, let’s weigh it. Let’s see how much the entire watch weighs. You can see the weight on the scale is 241.7 grams. This weight is exactly the same as the genuine original. Only by using real precious metal can you achieve such weight. If you used a steel case from the market, its weight would only be around 100 grams. If someone simply weighs your watch, they will immediately notice the weight is wrong. Using precious metal allows it to faithfully replicate the material, weight, color consistency, and texture.
For this watch, the case is not made in a common way. A truly good case is developed with CNC original data. Whether it’s the brushing, the polished surface treatment, the thickness, the gradual thinning of the strap, or the degree of tapering – everything can be completely consistent with the original. This is the mark of a high‑quality gold case.
For this watch, you can see that the gemstone setting is also developed based on original data. For this kind of AP skeleton gem‑set watch, we have done some research. The gemstones are not the large type. You can see their cross‑section – there is a gap at the front and a gap at the back. This setting process matches the genuine. Each gemstone is chamfered into a quadrilateral and then set with beveled edges. You can see it’s very nice – excellent. This is craftsmanship that matches the original.
This watch is very rare on the market. Its hour markers are also inlaid with diamonds and red gemstones (rubies). The diamonds are CVD lab‑grown synthetic diamonds used for setting. Under light, their fire and texture are very strong.
This watch uses an AP‑style movement – a modified 3132 movement (domestic base). As we mentioned, this movement achieves the same skeletonized appearance, a truly free‑sprung structure, and a double balance wheel structure. That’s the front. On the back, you can see it is a genuine automatic winding movement. The automatic rotor on the back is also custom‑made by us – an 18K rose gold rotor – achieving the same material and color as the original.
In fact, there are many models of AP skeleton watches that can be made – such as the steel case 15407, the ceramic 15416, and the precious metal 15412. There are many styles. Whether it’s a mirror finish or a double‑gold (two‑tone) style, all can be made through CNC original data development.
This watch already restores all the original details very well – from its material, to its polishing process, to its movement architecture, to its gemstone setting process. For watches like this, as long as you wear it out without sending it to a professional institution for testing, its flaws are very, very minimal.
This is the ultimate purpose and meaning of custom watches – to help you save money.
This is a modified AP 15412 BC in platinum (white gold) with rubies – a simple watch sharing.
If you like this watch, we can discuss it together. Today’s Bozwatch Watch Sharing is over. If you like Bozwatch’s videos, please double‑tap to like and follow. See you next time.