Summary of Key Points about the Modified Patek Philippe Nautilus (Model 5811G – White Gold)
Here are the essential features of this top‑tier modified watch:
1. Model & Material
- Model: Patek Philippe 5811G Nautilus (white gold)
- Case and strap made entirely of 18K white gold (real precious metal)
- Color comparison: 18K white gold is brighter and whiter than steel – steel cases are not as white/bright
2. Weight
- Total weight: 195.5 grams – exactly matches the genuine
- Close to 200 grams – a critical authenticity check
3. Buckle / Clasp Type
- The 5811G is a new Nautilus – uses a press‑type buckle (simple and easy to use)
- Old style: double‑layer safety buckle (more troublesome to wear)
4. Case & Strap – CNC Original Data
- Developed using CNC original data (scanned from genuine)
- Case shape, polishing, and details are all very good
- Front brushing: Very delicate
- Chamfered edges: Very well polished
- Beak arc (side profile): Opening arc matches genuine craftsmanship
- Thickness: Consistent with genuine
5. Dial, Hands & Calendar – Top‑Tier Aftermarket
- Dial: Blue face – developed from original data; blue color is very good; radial pattern feels very good
- Hour markers (bars): Very round and three‑dimensional
- Hands: Three‑dimensional (3D); hand axis effect quite good
- Calendar: Thick date calendar – fills the entire calendar window (very full)
6. Movement – Non‑Regulated 330 Clone (High Quality)
- Non‑regulated (no card) 330 engraving movement
- Automatic rotor: 18K gold rotor
- Bridge features: Gold sleeve present; engravings are very clear, very deep – much better than ordinary market goods
- 330 engraving clearly visible
- Upgrade option: Can upgrade to original genuine 330 movement if special needs / sufficient budget
- Current clone movement is already “quite good”
7. Caseback & Precious Metal Hallmarks
- Four‑corner precious metal marks: AU750, dog head, PPC, scales – all engraved very well
- Buyers must pay attention to these details
8. Strap Craftsmanship
- Overall feel: Full texture – relatively good
- Brushed finish: Delicate
- Middle bead: Slightly raised (visible from the side)
- Taper: Front (top) is thicker, bottom (near clasp) is thinner – gradual thinning – matches genuine
- Polished parts: Very well handled; knife‑edge polishing quite good
9. Buckle Details
- Calatrava logo: Many factories do a poor job, but this one is very good – a hallmark of a good gold case
- Inside the buckle: Full spelling of PP – very clear
- Back of buckle: Precious metal marks – AU750, dog head, PP, scales – all very good
10. Key Quality Checklist for PP 5811G
| Component | What to Look For |
|---|---|
| Material | 18K white gold (brighter/whiter than steel) |
| Weight | ~195.5g |
| Buckle type | Press‑type (new style) – not double‑layer safety buckle |
| Case finishing | Delicate brushing; well‑polished chamfered edges; correct beak arc; correct thickness |
| Dial | Blue color correct; full radial pattern; round/3D hour markers |
| Hands | 3D, good axis effect |
| Calendar | Thick, fills window |
| Movement | Non‑regulated 330 clone; 18K gold rotor; gold sleeve; deep, clear engravings |
| Hallmarks (caseback) | AU750, dog head, PPC, scales – deep, clear |
| Strap | Raised middle bead; gradual thinning; delicate brushing; good polishing |
| Buckle | Calatrava logo very good; inside: PP spelling clear; back: AU750, dog head, scales |
Concluding Comment
This video focuses on the PP 5811G Nautilus – a newer generation white gold Nautilus that has replaced the 5711/1G. The key differentiator from the steel version is the material color and weight: 18K white gold is noticeably brighter and whiter than steel, and the weight (195.5g) is significantly higher than any steel watch. This build uses real 18K white gold for the entire case and strap, paired with a high‑quality non‑regulated 330 clone movement (with 18K gold rotor, gold sleeve, deep engravings) and top‑tier aftermarket dial/hands/calendar.
Strengths:
- Real 18K white gold (195.5g) – correct weight and color (brighter/whiter than steel). This is the only way to avoid the “steel case” tell.
- CNC original data case – delicate brushing, well‑polished chamfers, correct beak arc, correct thickness.
- Press‑type buckle (new style) – matches the genuine 5811G (not the old double‑layer safety buckle).
- Non‑regulated 330 clone movement – balance with counterweights (no card regulator), 18K gold rotor, gold sleeve, deep clear engravings. This is a premium clone movement that closely mimics the genuine 330 calibre.
- Dial, hands, calendar – blue color correct, radial pattern full, 3D hands, thick calendar. High‑quality aftermarket parts.
- Strap details – raised middle bead, gradual thinning, delicate brushing, good polishing.
- Hallmarks – AU750, dog head, PPC, scales on caseback and buckle – deep and clear.
- Upgrade path – can upgrade to genuine 330 movement if budget allows.
Weaknesses / Considerations:
- Movement is a clone – even with non‑regulated structure and 18K rotor, it is not a genuine Patek 330 calibre. Under expert scrutiny, finishing differences may be visible.
- Dial, hands, calendar are aftermarket – high quality, but not original. The blue color may have slight deviations compared to genuine.
- Still an unauthorized replica – carries Patek Philippe trademarks without permission.
- Cost – real 18K white gold is expensive. This is not a budget option.
Final verdict: The PP 5811G is the modern successor to the iconic 5711 Nautilus, and this modified version targets collectors who want the newer generation white gold Nautilus with the updated press‑type buckle. The use of real 18K white gold (195.5g) ensures correct weight and the distinct bright‑white appearance that steel cannot replicate. The non‑regulated 330 clone movement with 18K gold rotor and deep engravings is among the best available, and the aftermarket blue dial/hands/calendar are top‑tier.
For a collector with a budget sufficient for a solid 18K gold case and a high‑quality clone movement, this 5811G offers a compelling alternative to the genuine (which trades for over 100,000 USD). The ability to upgrade to a genuine 330 movement remains an option for perfectionists. Bozhong’s emphasis on the brightness difference between white gold and steel, the press‑type buckle (a key identifier of the 5811G vs older models), the raised middle bead, and the deep hallmarks provides a clear checklist for evaluating this build. As always, independent verification of gold purity (XRF) and, if paying for a genuine movement, authentication are strongly recommended. For the informed buyer, this is one of the best 5811G modifications available today.
Hello everyone, this is Bozwatch Reviews.
Every watch is a work of art, a testament to time, and I am a fanatic believer in them. I also hope that all watch enthusiasts can avoid pitfalls and find their own “Bole” (discerning patron).
Some fans have messaged me privately, wanting to buy the best modified and upgraded PP 5811G white gold Nautilus on the market – and it must be made of precious metals. They asked me to shoot a video to authenticate it together. Let’s take a look – is such a custom‑made 18K white gold watch worth buying?
So I paid out of my own pocket to get one from a merchant – a Patek Philippe 5811G Nautilus. Let’s see if its craftsmanship lives up to the highest standard.
This PP 5811G Nautilus is made entirely of 18K white gold – both the case and the strap. You can see that the color of 18K white gold is brighter and whiter than that of a steel case. A steel case is not as white and bright.
Now let’s weigh it together. You can see it weighs 195.5 grams – exactly the same as the original. Nearly 200 grams.
The PP 5811G Nautilus is a new model. You can see the clasp is a push‑button type – relatively simple and easy to use. The older version has a double‑layer safety buckle, which is more troublesome to wear.
This watch is made using CNC original data for development and production. The case and strap – their shape, polishing, and other details – are all very good. I’ll introduce them one by one later.
The dial on this 5811G is a blue face. This dial is developed with original data – it’s a high‑quality aftermarket part. You can see the blue color is very good. The sunburst radial pattern feels very good. The hour markers are very round and three‑dimensional.
The hands are also three‑dimensional. The hand’s central axis effect is quite good. The date wheel is a thick‑fill date – very full, filling the entire date window.
Now the movement – it is a free‑sprung (non‑caliber) 330 movement with an 18K gold automatic rotor. You can see it is a true non‑caliber movement – consistent with genuine craftsmanship. On the bridges, there are also gold chatons. The engravings are very clear – much clearer than ordinary market goods. The “330” engraving and other markings are all very deep and well executed.
If you have special needs, you can upgrade to an original 330 movement. But this movement is already very good.
Now let’s look at the case craftsmanship. When you choose a custom watch like this, the case details are very important. Look at the front – the brushing on the strap is very delicate. The chamfered edges are very well polished. Look at the polishing on the four corners.
Now look at the side – you can see the beak arc of the Nautilus. The opening curvature matches the genuine, and the thickness is consistent.
Now look at the caseback – the precious metal hallmarks on the four corners. The AU750 mark, the dog head, the PP mark, and the scale on the other side – all are engraved very well. When you choose a gold watch like this, you must pay attention to these details.
Now look at the strap. The overall feel is very textured – quite good. The brushing is fine. The center bead is slightly raised – from the side, you can see it. Also, the strap is thicker at the top and gradually becomes thinner toward the bottom – this also matches the genuine. The polished sections are very well handled, and the edge polishing is quite good – relatively perfect.
Now look at the clasp. The Calatrava logo – many factories don’t do this well, but this one is very good. This is the kind of craftsmanship detail a good gold case should have. The Calatrava mark is excellent.
Now look at the engravings inside the clasp – the full spelling of Patek Philippe – very clear. And on the back, the precious metal hallmarks – AU750, dog head, PP mark, and scale – all very good.
This is a PP 5811G – upgraded with an 18K white gold custom case. Customers and watch enthusiasts, when choosing, you must keep your eyes open and select a style with good craftsmanship. A watch like this – this is a watch with proper craftsmanship. Only such a watch can be worn with confidence.
That’s all for today’s Bozwatch watch sharing. If you like Bozwatch’s videos, please double‑tap to like and follow us. See you next time.
