Name: Panerai Radiomir 1940 3 Days 47mm PAM00662
Brand: Panerai
SKU: PAM00662

The PAM00662 is the most historically honest Panerai you can buy: no crown guard, no complications, just the cushion case and oversized dial that Italian Navy divers trusted in the 1940s. At 47mm it is unambiguously large, but the proportions are deliberate, not fashion. Manual-wind discipline, three days of reserve, nothing extra.

What it is

The Radiomir name traces to a radium-based luminous compound Panerai supplied to the Italian Navy before and during World War II. The original 1940 cases were made for combat swimmers using a simple wire-lug cushion form machined from a single steel block. There was no crown protector because the Radiomir predates that feature entirely , it arrived later with the Luminor line and its crown-locking bridge.

The 47mm 3 Days references these wartime instruments directly, using a dial layout and case architecture that maps closely to surviving originals. Panerai produced the PAM00662 from 2014 through 2019, making it a relatively brief run in a reference family that has cycled through many variants.

Buying notes

The sandwich dial, where a top plate sits above a lower luminous layer, is correct for this reference but the layering must be crisp and even under a loupe , uneven gaps or misaligned cutouts suggest a replaced or tampered dial. The P.3001 caliber is large and relatively simple, which makes damage from casual manipulation more likely on an unworn specimen than owners expect. Wire lugs are soldered, not machined integral, and breaks or poorly repaired joins are worth checking carefully before purchase.

Box and papers matter more than usual here because the short 2014 to 2019 production window means a clean set confirms the reference and year, while a naked watch is harder to date with confidence. Avoid examples where the original Panerai strap has been substituted without documentation, especially if the seller presents an aftermarket strap as original equipment.

Market read

Secondary market pricing for the PAM00662 has settled in a range that reflects discontinued status without a large collector premium. Complete examples with box and papers command a meaningful gap over stripped watches. The 47mm size limits the buyer pool compared to smaller Panerai references, which keeps prices accessible for collectors who actually want that scale.

Service expectations

The P.3001 is a Panerai manufacture caliber, a manually wound movement with a three-day power reserve built on a modular architecture. Service intervals are typically five to seven years under normal use. Panerai's service centers can handle this caliber directly, and a handful of independent watchmakers with proven Panerai experience are competent alternatives , confirm P.3001 experience specifically before committing.

Editorial copy is AI-drafted from primary sources and reviewed by Grail Atlas before publication. Where the text is uncertain about a fact, it says so. Email corrections@grailatlas.com if something reads wrong. Signals on this page (community, OSINT) are clearly separated from the editorial sections.

Uncommon#2 in familyOfficial press photos

Condition affects price

Pre-owned watches trade across a wide condition spectrum. These ranges are typical for the secondary market.

New Old Stock

Unworn example retaining original packaging, tags, and warranty documentation.

+30–50% vs median

Unpolished

Worn but the case has never been polished; original brushed and polished surfaces are intact.

+15–25% vs median

Polished

Case has been professionally or amateur polished at some point; edge definition is softened.

-15 to -5% vs median

Recently Serviced

Movement has been recently serviced with documented service records; case condition varies.

At median

Project

Needs service, has dial or hand issues, non-original parts, or other remediation before daily wear.

-50 to -25% vs median

Full condition grading guide →

Market price

$4,500–$6,500

steel·2026 Q2

Price trend chart coming soon

The wire-lug Radiomir 1940 is a cleaner design than the Luminor and attracts collectors who find the cushion case more elegant; secondary prices are somewhat lower than comparable Luminors.

Editorial estimate, 2026 Q2. Actual prices vary by condition, date, and box/papers status.

Movement tier: unclassified · caliber Panerai Cal. P.3001: in-house manual-wind with small seconds and power reserve, 21,600bph, 72h PR, 21j; used in Radiomir 1940 3-Day; Panerai manufacture caliber · 72h power reserve (3 days)

Large case: suits wrists 7 in+ (18 cm+)

47 mm case. A bold, statement-size wear. Best suited to larger wrists where the case sits flush.

Not yet rated

Community + OSINT signals haven’t landed for this reference yet. We don’t publish a rating against zero signal: the number would mean nothing. Editorial body + caliber + market value still surface above; ratings appear once the signal corpus does.

Search pre-owned listings

Chrono24

eBay (sold listings)

WatchBox

Authentication

Wire lug attachment is the defining Radiomir characteristic; any Radiomir with spring-bar lugs has been modified.

Known issues in the market

Wire bail lug attachment must be original; spring-bar modification is irreversible and destroys originality.
Cal. P.3001 manual-wind with small seconds and power reserve; verify through caseback.

Area	What to check	What is correct	Red flag
case	Wire lug attachment	Wire loops soldered to case; strap passes through wire bails; no spring-bar holes in case	Spring-bar holes drilled in case; standard lug attachment instead of wire bails; wire loops replaced with spring-bar lugs
caseback	P.3001 caliber	Cal. P.3001 visible; manual-wind with small seconds and power reserve indicator	Automatic rotor present; incorrect caliber; non-Panerai movement
dial	Radiomir 1940 typography	Radiomir 1940 3 Days text correct; sandwich dial construction with luminous paste under top layer	Incorrect model designation; non-sandwich dial construction; luminous material applied on top of dial surface

Common legitimate replacements

Original Panerai strap on wire bails; generic straps can be fitted but wire attachment must be preserved.

Expert resources: Panerai Radiomir 1940 PAM00662 press materials. Panerai Cal. P.3001 documentation.

Authentication guide

Last reviewed June 2026

The Radiomir 1940 3 Days (PAM00662) is a historically faithful reissue of the 1940s military watch case, characterized by wire lugs soldered to the case body rather than the drilled-through lugs of later Panerai designs. The absence of the crown-protecting device immediately distinguishes this from any Luminor reference.

Known reproduction risks

toggle

HIGH RISK

Replicas with flat-printed dials and standard crown/stem assemblies rather than the correct wire-lug case geometry. The 47mm size attracts replica production due to the large case being easier to manufacture at rough tolerances.

Dial numerals with no depth under loupe -- flat print rather than aperture sandwich
Lugs that are solid and drilled through rather than wire loops
Crown-protecting lever present on a stated Radiomir -- this would be a Luminor
Case dimensions inconsistent with the 47mm / 17.2mm height specification

The wire lug is difficult to fake convincingly at quality. Inspect the lug-to-case junction first on any secondary market Radiomir 1940 example.

MEDIUM

Earlier PAM numbers or non-1940 Radiomir cases presented as the 1940 reissue, typically to command a premium for the wire-lug aesthetic.

Lugs that are solid drilled-through on a stated 1940 reissue
Case profile that lacks the specific cushion geometry of the 1940 reissue
PAM reference number on the caseback inconsistent with PAM00662

Dial variants by era

toggle

Era	Description	Identifiers
PAM00662 production (2014 to 2019)	Sandwich dial in black, 47mm cushion case with wire lugs, traditional crown without bridge, small seconds at 9.	No crown-protecting lever: the Radiomir uses a traditional crown without the bridge mechanism. Any Radiomir with a Luminor-style lever is incorrectly described or is a different reference Wire lugs: the lug-to-case attachment is a thin wire loop rather than solid machined lugs. The wire is visible at the transition between lug and case Sandwich dial with aperture-cut numerals revealing lume substrate below "RADIOMIR" and "PANERAI" text in the correct typeface "P.3001" caliber designation on the dial for this reference Small seconds at 9 o'clock Case diameter 47mm -- larger and more commanding than the Quaranta 40mm

Service part flags

toggle

Wire lugs

Original: The Radiomir 1940 case uses wire lugs soldered to the case body, replicating the 1940 military specification. The wire should be of consistent gauge, fully secured with no visible gap at the case junction, and finished to match the case metal.

Replacement tells

Lugs that are solid drilled-through rather than wire loops -- indicates a standard Panerai case, not the 1940 reissue
Wire with any visible movement or gap at the solder point where it meets the case body
Wire gauge or finish inconsistent with the case steel quality
Strap attachment that threads through the wire and sits off-center -- correct wire lug geometry keeps the strap centered

Crown (no bridge)

Original: The Radiomir uses a traditional screw-down crown without the Luminor bridge. The crown is larger in diameter than a standard dress watch crown but has no bridge or lever over it. This is architecturally correct; the absence of the bridge is the defining Radiomir tell.

Replacement tells

Any crown-protecting lever or bridge on a stated Radiomir -- this would make the watch a Luminor, not a Radiomir
Crown that does not screw down -- the Radiomir uses a screw-down crown for water resistance despite having no bridge
Crown with Panerai logo at incorrect scale or wrong logo generation for the production era

Sandwich dial

Original: Two-layer construction. The aperture cuts through the top plate reveal the lume substrate below. On the Radiomir 1940 family, the dial proportions are designed for the larger 47mm case and the numerals are proportionally larger than on the Due.

Replacement tells

Flat-printed numerals without depth under loupe -- indicates a replica or replacement dial
Numeral proportions that look too small for the case diameter, suggesting a dial from a smaller Panerai reference
Lume substrate aging character that is inconsistent with the stated production era

P.3001 caliber

Original: Cal. P.3001 is a manual-wind in-house Panerai caliber with small seconds and power reserve display, beating at 21,600bph with a 72-hour reserve. The movement should be signed and finished to Panerai manufacture standards.

Replacement tells

Movement visible through the caseback with automatic rotor -- P.3001 is manual-wind
Movement with bridge layout inconsistent with Cal. P.3001 documentation
Caliber designation on dial inconsistent with P.3001 for the stated reference

Case back markings

toggle

PAM00662 production

Solid caseback with engraved "PANERAI" text and reference PAM00662
"RADIOMIR" on the caseback
Serial number on the case band
"SWISS MADE" engraved on the caseback
Water resistance rating: 10 ATM / 100M

Movement tells

toggle

Cal. P.3001 is manual-wind at 21,600bph with a 72-hour power reserve. A fully wound PAM00662 that stops in under 60 hours warrants inspection.
The power reserve indicator, if visible, should advance smoothly as the watch winds down. Erratic indicator movement indicates worn or displaced indicator mechanism.
Cal. P.3001 is Panerai in-house manufacture. The movement plates and bridges should be signed and show consistent brushed finishing. Any movement with outsourced caliber geometry is not original.
The screw-down crown without a lever should engage with positive thread engagement and seal correctly. A crown that cannot be screwed fully home indicates a worn or damaged stem or crown tube.

Sources: Panerai -- Radiomir 1940 3 Days specification and P.3001 caliber documentation; WatchUSeek -- Panerai Radiomir authentication forum; PaneraiCentral -- Radiomir 1940 wire lug identification guide.