Summary of Key Points about this Modified Patek Philippe Nautilus (Model 5712A – Steel Case)
1. Model & Case Material
- Model: Patek Philippe 5712A Nautilus (steel case, not precious metal)
- The case is developed using CNC original data (scanned from a genuine watch)
2. How to Identify a Genuine CNC Case – Two Key Checks
| Check | What to Look For |
|---|---|
| Side opening arc | The arc of the side opening (near the “beaks”) is higher / more curved than ordinary market cases. Ordinary cases have a lower bend degree. |
| Back cover removal | A genuine CNC case cannot be removed with a rubber ball – it is fixed with screws inside. Market cases can often be unscrewed easily with a rubber ball. |
3. Dial, Hands, Calendar & Moon Phase – “Top‑Level Aftermarket (Down) Accessories”
- Developed with original data
- Dial: Color and radial lines are very full – “look great”
- Hands: Three‑dimensional (3D), not paper hands; central axis effect; strong texture under light
- Calendar: Outer ring with 31 numbers
- Moon phase: Top‑tier “down” moon phase – frosted/finished correctly
- Special detail: Polished rivets on the round bar – ordinary watches do not have this
4. Case Brushing / Finishing
- The wire drawing (brushing) on the front of the case is very delicate – what a top‑level modified 5712A needs to have
5. Movement
- Non‑regulated (non‑calibrated) 240 integrated moulded movement – best on the market
- Bridge engravings: Deeply engraved
- Rotor: 22K gold (real gold) automatic rotor
- Claim: The back of the watch is over 99% close to the genuine – without a genuine movement beside it for comparison, it is hard to tell at a glance
6. Strap / Bracelet
- Polishing and wire drawing are quite good – very delicate
- The protruding (raised) feeling of the middle beads is just right
7. Buckle / Clasp Options
- Old style: Two‑section safety buckle – press down, then close two safety clasps
- New style: Butterfly buckle – pops open directly when pressed (more convenient)
- Choice depends on personal preference
8. Overall Assessment
- The watch is described as the top modified version of the 5712A – details are “really perfect,” front is “very invincible”
- Question posed to viewers: Is this modified watch worth buying, or is it a waste of money?
9. Key Quality Checklist for PP 5712A (Steel CNC Case)
| Component | What to Look For |
|---|---|
| Case side arc | Higher / more curved opening arc than ordinary cases |
| Caseback removal | Cannot be removed with rubber ball – screw‑fixed |
| Dial | Full radial lines, correct color |
| Hands | 3D, strong central axis effect |
| Moon phase | Top‑tier down moon phase |
| Polished rivets | Present (ordinary watches lack this) |
| Brushing | Very delicate on case front |
| Movement | Non‑regulated 240 clone; deeply engraved bridges; 22K gold rotor |
| Bracelet | Delicate polishing/brushing; raised beads just right |
| Clasp | Old style (safety buckle) or new style (butterfly) |
Concluding Comment
This seventeenth video (focusing on the 5712A steel Nautilus) differs from the previous precious‑metal Patek builds. Here, the case is steel (not gold), so weight is less critical. Instead, the emphasis is on CNC case accuracy and movement authenticity.
Strengths:
- CNC original data case – the two identification methods (side opening arc height and screw‑fixed caseback) are practical, actionable checks that any buyer can perform.
- Top‑level aftermarket dial, hands, moon phase – developed from original data, with details like polished rivets that ordinary replicas miss.
- Non‑regulated 240 clone movement – with a 22K gold rotor (real gold), deeply engraved bridges. Claimed 99%+ similarity to genuine – hard to distinguish without side‑by‑side comparison.
- Delicate brushing and finishing – on both case and bracelet.
- Choice of clasp – old safety buckle or new butterfly buckle, depending on user preference.
Weaknesses / Considerations:
- Steel case, not precious metal – no intrinsic melt value. The value is entirely in craftsmanship and accuracy.
- Movement is a clone – even at 99% similarity, it is not a genuine Patek 240. Purists may spot differences under magnification.
- Dial, hands, moon phase are aftermarket – high quality, but not genuine.
- Still an unauthorized replica – carries Patek Philippe trademarks without permission.
Final verdict: For collectors who want a steel Nautilus 5712A (the moon‑phase version), this modified watch represents the current top tier of what is available. The CNC case with its distinctive higher opening arc and screw‑fixed caseback are significant upgrades over ordinary “factory” cases. The 22K gold rotor and deeply engraved bridges on the clone 240 movement push it close to genuine. The front dial, hands, and moon phase are described as the best aftermarket parts available.
The question posed – “Is it a waste of money?” – depends on the buyer’s perspective. Compared to a genuine 5712A (which is also steel but trades for well over 100,000 USD due to rarity), this modified version costs a fraction. For an enthusiast who wants to study and enjoy a near‑perfect replica, it offers excellent value. For someone expecting a genuine Patek, it would be disappointing. As always, buyers must understand what they are purchasing – an unauthorized replica with a high‑quality clone movement and aftermarket parts – and verify the claims (especially the 22K gold rotor and CNC case) independently if possible. The two case identification tips provided by Bozwatch are particularly useful for avoiding lower‑tier products.
Hello everyone, this is Bozwatch Reviews.
Every watch is a work of art, a testament to time, and I am a fan of them. I also hope that watch enthusiasts can avoid pitfalls and find their own “Bole” (discerning patron).
Because some fans have messaged me privately, wanting to buy the current market’s modified and upgraded PP 5712A Nautilus. They asked me to take a look and help them decide – is such a modified watch worth buying? Or is it just a waste of money?
So I spent my own money to buy such a 5712A – a top‑level aftermarket version – to make a video for everyone, to show you what the best modified 5712A looks like.
First, you can see that this watch is a steel case watch. The case is developed using CNC original data. Let me teach you how to identify a real CNC case.
Look at the side – the arc of the opening. You can see the side opening arc of these two “beaks” is higher. On ordinary market cases, the curvature is not as high. Without this curved opening, the bend is the same as the regular one – but then the bend would be too high.
Another thing is the caseback. On ordinary market cases, you can remove the caseback directly with a rubber ball. But on this CNC case, you can’t – it’s fixed with screws from the inside. That’s one way to identify a genuine CNC case.
Now let me show you the movement inside and the dial. These accessories are developed with original data – they are top‑tier aftermarket parts.
First, look at the dial. The color and sunburst radial lines – don’t they look great? Very full. Then the hands – they have a proper central axis effect. The hands are all three‑dimensional, not paper‑thin. Under light, you can see the texture is quite strong.
Now the calendar. The calendar is on the outer ring – see? The 31 numbers on the outer ring are the date. The moon phase is inside – it is also a top‑level aftermarket moon phase. The front accessories are all developed with original data.
Look at the details – for example, the polished rivets on the hour markers – ordinary watches don’t have these. See? It’s really good.
Now look at the front of the case – the brushing is very delicate, isn’t it? This is what a top‑level modified watch should have. The details are truly perfect. The front is already very impressive.
Now let’s look at the movement on the back. This is also the best on the market – a free‑sprung (non‑caliber) 240 integrated molded movement. You can see it’s non‑calibrated – you can see the free‑sprung structure. The bridges have deep engravings. And the rotor is a 22K solid gold automatic rotor. The back is very close to the genuine – I can say it reaches over 99% similarity. If you don’t have a genuine movement right next to it for comparison, it’s hard to tell at a glance.
Now the strap. You can see the polishing and brushing on the strap – quite good, very delicate. The raised center links are just right – not too high, not too low.
Now the clasp. There are two types of clasps. One is the old‑style two‑section safety buckle – you press it down and then close the two safety clasps. The other is the new butterfly buckle – it pops open directly when pressed. The butterfly buckle is more convenient. It mainly depends on your preference – you can choose the old style or the new style.
This is the PP 5712A – a top‑level aftermarket version. A simple watch sharing. This is the best modified 5712A available.
What do you think of this modified watch? Is it a waste of money?
That’s all for today’s watch video. If you like Bozwatch’s videos, please double‑tap to like and follow. See you next time.
