Panerai Luminor Quaranta BiTempo
21 % below RRP
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ℹ️ 1-month trend
Price change over the past 30 days. Shows the short-term market movement — relevant if you want to buy or sell soon.
ℹ️ 4-month trend
The central metric behind the momentum score. It filters out short-term swings and shows the true, medium-term market trend of this reference.
ℹ️ Volatility
Annualised price fluctuation. Below 10 % = very stable, 10–20 % = normal, above 20 % = volatile. With high volatility the price can change quickly — in both directions. Be cautious about buying without checking the current price.
ℹ️ Momentum score
ChronoCheck's own indicator from 0 to 100, calculated from the 4-month trend, volatility and market direction.
- Above 60 — Upward trend. Good time to sell, prices are rising.
- 40 – 60 — Neutral. Stable price level, no pressure to act.
- Below 40 — Downward trend. Wait or enter at a good price.
ℹ️ Investment Grade A/B/C/D
ChronoCheck's own rating for each reference. A 0–100 point scale, made up of four weighted components:
- Momentum (40 pts) — trend strength from the momentum score.
- Liquidity (25 pts) — number of active live listings.
- Stability (20 pts) — inverse volatility — the calmer, the better.
- Source robustness (15 pts) — number of independent market sources.
- A · 75+ Trend is right, liquidity good, data broad.
- B · 55–74 Solid, but one component weaker.
- C · 35–54 Average, volatility or market breadth weigh on it.
- D · below 35 Downward or too little data — a collector's piece.
Not investment advice. Pure data analysis from aggregated market sources.
What if you had bought back then …
What would a purchase at the median market price back then have become — at today's level of $9,451. A pure return calculation, excluding insurance, servicing and transaction costs.
Data from an aggregated median time series (watch_market_daily). CAGR = Compound Annual Growth Rate, normalized to 365 days. Not an investment recommendation.
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Technical data
Panerai Ref. PAM01640 — Variants and collector names
Known as: Quaranta BiTempo Green, Green BiTempo, Wempe BiTempo
Movement variants
- P.900/GMT (?–today) · 28800 bph
Bezel variants
- Quaranta-Fixed-Steel-2024
Dial variants
- Green Sunburst — Sandwich construction; Arabic numerals + baton indices; small seconds at 9h; date window at 3h; Panerai crown-protecting bridge signature
Crystal variants
- Saphir-PAM01640
Bracelet variants
- Luminor Integrated Metal Bracelet Ref. Luminor-Quaranta-Steel-Bracelet-2024
Serial numbers
- BB000001 – BB001200 (2024–2024) — Year code AA (2024), serial prefix BB; limited edition of 1,200 pieces for Wempe Germany; case no. 7539. Exact final serial number not verified – endpoint calculated from the stated production quantity.
Search for the PAM01640 and you'll run into three different nicknames doing the rounds — Quaranta BiTempo Green, Green BiTempo, Wempe BiTempo. That's no accident. Panerai relaunched the Quaranta line as its own collection in 2024, named for the 40mm case that nods back to the historic Radiomir proportions of the 1940s. The "Wempe" tag hiding in one of those names points to how it's sold: boutique editions like this often run through select retail partners rather than the wider dealer network, which keeps secondary-market supply noticeably tight.
## Caliber P.900/GMT: A Second Time Zone in a 40mm Case
Under the dial sits the caliber P.900/GMT, Panerai's in-house movement with an added time-zone display. That puts the PAM01640 in company with a whole family of Quaranta references built on the same 40mm case architecture, differentiated by dial and bezel. For buyers, the takeaway is simple: check the caliber first when comparing pieces, because two visually similar Quaranta models can sit worlds apart under the hood.
## The Green Sunburst Dial as the Giveaway Detail
The dial reference Green-Sunburst-GMT-PAM01640 sums up the look perfectly: a green sunburst finish that shifts from forest green to near-black depending on the light. Paired with the fixed steel bezel from the 2024 production run (code Quaranta-Fixed-Steel-2024), it's a look that stands well apart from the classic black Radiomir dials that have defined the brand's image since 1984.
## What This Means for Authentication
With three names circulating for one reference, it pays to look at the combination of caliber, dial code, and bezel code — the three data points that pin down the PAM01640 in detail. If any one of them is missing, or the color doesn't match the sunburst finish, treat that as an early red flag on any listing.
Brand profile: Panerai
Panerai Luminor and Radiomir watches are unmistakable thanks to their large case and signature crown-guard bridge. Fakes are usually given away by the crown-guard mechanism.
- Sandwich dial: genuine Panerai sandwich dials show a visible GREEN lume layer between the dial layers when viewed at an angle (on Arabic-numeral models) — fakes have single-layer dials with painted-on lume
- Crown-guard mechanism: Panerai's signature lever guard must close with a solid, firm click AND function correctly (turning the lever locks the crown for water resistance) — a purely decorative lever means fake
- Seconds-hand length: a genuine seconds hand reaches almost to the outer edge of the dial — fakes have shorter hands
- Engravings: genuine Panerai engravings are deep, laser-etched with sharp, clean edges — fakes show acid-stamped engravings with a sandy texture that fades over time
Serial number format: Panerai serial numbers: 'OP' followed by 6-7 digits on the case back. Can be verified online.
Further sources
Buying guide: Panerai Luminor Quaranta BiTempo
Entry into Panerai
At $9,451 this reference is one of the more affordable ways to wear a Panerai on your wrist. That is precisely why many pieces have already passed through several hands — condition varies accordingly. Buyers here should pay particular attention to service history and honest photos from the seller.
Where the price stands
Barely any movement over the past four months (+0.0%). The market for this reference is calm, with no pressure in either direction. Good for buyers who want to compare at their leisure.
Watch out for swings: This reference has an above-average volatility of 42.5 percent. In concrete terms: the price can move by several hundred euros within a few weeks. Check the current value before buying or selling — old listings or auction results from two months ago are of little help.
What to look out for when buying?
- Authenticity: The serial number and reference on the case must match the papers. A professional authenticity check of the Panerai Luminor Quaranta BiTempo reliably rules out counterfeits.
- Condition: Check scratches on the case and bezel — professional refurbishment can leave traces.
- Service history: A documented service by the manufacturer or a certified watchmaker increases the value.
- Scope of delivery: Box, papers and warranty card make a noticeable price difference on the Luminor Quaranta BiTempo.
- Independent certification: The CPS-52 standard covers 52 checkpoints — from the serial number and the timing machine to water resistance. The result is secured on the blockchain and can be verified at any time.
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