Precision Watch Forensics LAB / CHRONO / EVIDENCE
Macro close-up placeholder of watch movement under cool light
Focus-stacked inspection Escapement geometry, wear lines, and lubricant spread documented with calibrated scale marks.
Case Ref PWF-0217-A
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Dial & lume verification Emission profile, print registration, and index symmetry cross-checked against reference sets.
Scan Mode AR-SAPPHIRE
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Metrology workflow Thickness, runout, and thread form measured; findings logged with serial-number annotations.
Gauge ±0.01mm
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Evidence-grade cataloging Compartmentalized trays, photo logs, and chain-of-custody markers for every component.
Vault SEALED

Authenticity Signals

Reference-matched engravings, rotor finishing, hand stack geometry, and micro-type patterns.

Signal Set

Damage Reconstruction

Impact vectors inferred from case deformation, balance staff evidence, and jewel fractures.

Vector Log

Material Trace

Bead-blast residue, plated layers, and corrosion halos mapped under controlled raking light.

Trace Map

Chronometric Baseline

Beat error, amplitude, and positional variance captured as a forensic timeline of performance.

Chrono Arc
Clinical inspection for high-stakes horology

Precision Watch Forensics

A disciplined workflow for authenticity, tamper detection, and failure analysis. Every observation is documented with calibrated scales, crosshair guides, and serial-style evidence tags—built for insurers, collectors, and workshops.

Protocol Snapshot

Intake → Macro imaging → Part catalog → Measurement → Reference comparison → Report pack.

PWF / SOP-3

Report Deliverables

Annotated photos, findings matrix, evidence flags, and recommendations with clear confidence levels.

PDF / ARCHIVE

Findings Grid

Recent investigative notes—surface cues, engraving fidelity, and component congruence.

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Evidence FlagEF-01

Caseback Serif Drift

Font geometry deviates at 20×; stroke endings soften beyond known reference tolerance.

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Evidence FlagEF-02

Minute Track Offset

Index-to-tick alignment shows consistent phase shift; suggests reprint or mis-jig.

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Evidence FlagEF-03

Hairspring Touch Marks

Contact sheen on inner coils; likely tool interference during prior regulation attempt.

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Evidence FlagEF-04

Screw Head Faceting

Hex recess edges show rounding inconsistent with factory driver profile; removal history.

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Evidence FlagEF-05

Rotor Grain Direction

Brushed pattern runs off-axis; chamfer highlights lack the expected crisp sapphire sheen.

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Evidence FlagEF-06

Seal Compression Halo

Uneven witness mark indicates asymmetric torque; potential water ingress route.

Open dossier

Methods Grid

Controlled procedures: measurement, imaging, reference comparison, and chronometric baselining.

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ProcedureSOP-11

Dimensional Cross-Check

Thickness, lug width, and thread pitch captured to reject near-miss replica tolerances.

Read method
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ProcedureSOP-07

Raking Light Survey

Surface topology revealed by shallow-angle illumination; highlights polishing and rework.

Read method
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ProcedureSOP-03

Print Registration Map

Concentric circles and scale marks used to measure dial print drift and index symmetry.

Read method
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ProcedureSOP-02

Parts Cataloging

Rigid grid trays and tags ensure chain-of-custody clarity and repeatable reassembly.

Read method
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ProcedureSOP-15

Chronometric Baseline

Beat error and amplitude recorded across positions; anomalies plotted like a chronograph arc.

Read method
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ProcedureSOP-09

AR Coating Signature

Anti-reflective hue and flare behavior compared against manufacturer-specific references.

Read method

Archives Grid

Cataloged cases: repeat patterns, known variants, and documented anomalies.

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ArchiveARC-31

Patina vs. Refinish

Oxidation texture analyzed; edges and printing sharpness used to distinguish rework.

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ArchiveARC-19

Jewel Seating Marks

Press-fit signatures indicate prior replacement; seating ring highlights captured at 30×.

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ArchiveARC-07

Chamfer Integrity

Loss of crisp transitions suggests over-polish; measured against known chamfer angles.

Open archive
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ArchiveARC-22

Lume Decay Curve

Emission decay tracked; profile mismatch indicates non-OEM compound or contamination.

Open archive
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ArchiveARC-14

Crown Tube Wear

Thread crest flattening and gasket abrasion mapped; predicts sealing performance loss.

Open archive
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ArchiveARC-40

Serial Depth Profile

Laser vs. mechanical engraving signatures separated by depth uniformity and ridge texture.

Open archive

Field Notes

Short, practical posts: what to photograph, what to measure, and which cues carry real weight.

Featured Dossier

A sample forensic write-up with evidence flags, sparse narrative, and precise annotations.

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Rating: 4.5 / 5

Evidence-Grade Assessment: Dial Swap Indicators Under Macro

This case demonstrates a high-confidence dial replacement where the external appearance remains convincing at casual viewing distance. Under controlled imaging, several signals align: minute track phase drift, inconsistent print edge density, and a lume emission curve that departs from known reference behavior.

Evidence Flag
The strongest indicator is the repeated micro-offset between applied indices and printed ticks. The shift is consistent around the full circumference, suggesting a registration error during printing rather than random wear or lens distortion.

Secondary indicators include edge crispness of the dial text and subtle differences in varnish sheen under raking light. Together, these cues suggest the dial is not original to the case, even if other components match expected specifications.

Recommended next steps: confirm movement serial congruence, inspect hand stack clearance for tool marks, and capture AR coating behavior under standardized angles to rule out multiple-component substitution.

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Submit via Intake
For evidence submissions, use the intake form to preserve chain-of-custody metadata.

Contact / Intake

Send a case for examination. Keep descriptions factual: what happened, what changed, and what you observed.

Proposition

We provide documentation-ready forensic reports for authenticity disputes, shipping damage, and suspicious service history. Each submission receives a traceable reference code and a structured findings matrix.

Address

Precision Watch Forensics Lab
41 Sapphire Corridor, Suite 07
Graphite District, AR 10217
Intake Window: Mon–Fri, 09:00–16:00

Form

Open Intake Modal
Uploads are typically handled in the intake workflow (case photos, documents).