Final report · demo Complete-evidence final under the locked production method. Photographs are embedded and hashed. Outcomes of the completing photo session (piece count, condition pass) are illustrative for this demonstration.
veradis.ai · Provenance Confidence Score · ceramics & china

Wedding Tea Service — Tuscan Fine English Bone China, Rd 785452

Afternoon tea service for twelve · September 1939 · Owner: The present owner, British Columbia, Canada — daughter of the bride and the soldier · Companion: Appraise report

Report IDPCS-CH-2026-0003 · demo
Effective date3 July 2026
MethodVerify (PCS) · ceramics profile
Owner localeBritish Columbia, Canada — values in CAD
Scope & intended use. A documentary and photographic verification for the owner and their insurer; reliance by other parties is at their own risk. Not a certificate of authenticity. All twelve capture-protocol views and two documents are on file; component weighting disclosed below. Scores and registry results are as of the effective date — insurers typically require re-verification after 12–36 months.
The verdict
85/100
± 4 · 95% CI
Gold · lower bound 81 No curator action required Coverage 12/12 views · 2 documents · 1 linked object
Identity match · weight .3095
PLANT winged-crown TUSCAN CHINA mark and Reg. No. 785452 photographed on the piece — pre-1966 wording, matching the 1933 registry entry. Decorator's painted mark present; pattern name itself unrecorded by the maker's surviving lists.
Custody & story · weight .3072
Origin documented — dated 1939 wedding photograph, named principals, corroborating medal group, coherent timeline. The chain is direct and single-generation: The bride → her daughter, the present owner. A will extract or shipping record would formalise it.
Material integrity · weight .2584
Full layout counted and inspected under raking light (illustrative outcome): gilding bright throughout, minor gilt wear to two cup rims — noted, photographed, priced honestly in the companion report.
Risk profile · weight .1590
Clean across every registry checked (sweep below) — capped at 90 while the Art Loss Register remains unlicensed. The cap is the method telling the truth about its own coverage.
Score computation, disclosed (locked weights): (95 × .30) + (72 × .30) + (84 × .25) + (90 × .15) = 84.6, reported as 85.
Why ± 4, and why Gold. All four components are scored on complete evidence — twelve of twelve views, two documents, one linked object — so the interval is tight. The tier is assigned on the interval's lower bound (81 → Gold, narrowly). Two honest items stay open in the custody chain; formalising either would firm the lower bound, not the headline. The single document that tightens the interval most is a will extract or shipping record.

Locked-tier disclosure — Gold: authentication confidence high; suitable for secondary-market transaction subject to the buyer's standard diligence and the liability terms below. The same method corrected another family's 1904 story last week. This one holds.

The registry sweep · every source namedSeven registries checked. One gap — published, not hidden.
RegistryScopeCheckedResult
Interpol stolen-works databaseObject3 Jul 2026Clear
FBI Art Crime Team — national stolen art fileObject3 Jul 2026Clear
ICOM Red ListsCategory/patrimony3 Jul 2026 (Q2 dataset)Clear
CBP repatriation registryObject/patrimony3 Jul 2026Clear
Sanctions — OFAC · SECO · EU · UK OFSIParties3 Jul 2026Clear
Liens · litigation · encumbrancesObject/parties3 Jul 2026None found
Art Loss RegisterObjectNot checked · Q3 2026

Stolen-property check covers Interpol, FBI Art Crime Team, ICOM Red Lists, and CBP repatriation registry. Art Loss Register integration scheduled Q3 2026. This report does not discharge the recipient's own diligence obligations under applicable cultural-property, sanctions, or AML law, including any duty to consult the Art Loss Register.

Material characterisation · declared vs observed vs referenceFor china, the keys are the body, the marks, the gilt, and the count.
MeasureDeclaredObservedReference
Body & translucency Fine English bone china, R.H. & S.L. Plant Ltd, Longton Consistent — thin-walled translucent body per raking-light session (illustrative) Bone-china body characteristics for Staffordshire production of the period
Backstamp & marks PLANT winged-crown · TUSCAN CHINA · MADE IN ENGLAND · Reg. No. 785452 Photographed and matched — pre-1966 mark wording; decorator's painted mark present Published Plant mark chronology · British Rd registry table (785452 → 1933)
Gilding Gilt-encrusted "gold lace" over apple-green bands Bright throughout; engraved vermicelli texture; minor wear to two cup rims — photographed and disclosed Gilt-encrusted decoration class — the labour-intensive top of the maker's range; regilding would show tonal breaks
Count & completeness Afternoon service for twelve with serving suite; no teapot, as retailed Counted at the layout session (illustrative): twelve settings plus five serving pieces — 41 pieces Period retail configuration for gilt afternoon services — tea poured from the family silver

Category note: china carries no serials — identity rests on the mark system and the registered-design number, and the intake hints exist because owners misdeclare number types (this service's "serial" was a registered design; another family's "Rd" was a pattern number). Every observed cell above is backed by a hashed photograph in the evidence panel.

The evidence · each photograph beside what it provesTwelve views, two documents, one linked object.
Backstamp with Reg. No. 785452
Identity · maker & registry

Backstamp — PLANT · TUSCAN CHINA · Reg. No. 785452

The winged-crown mark of R.H. & S.L. Plant Ltd, Longton, with "MADE IN ENGLAND" and the registered design number printed on the piece. Rd 785452 sits between 779292 (1933) and 789019 (1934): the design was registered in 1933. A decorator's painted mark sits beside the stamp.

Trio and oval dish
Pattern · condition

Trio with the oval two-handled dish

Gilt-encrusted "gold lace" decoration with engraved vermicelli texture over apple-green bands — the labour-intensive top of Plant's decorative range. Gilding bright and unbroken on the photographed surfaces.

Cream jug & sugar bowl
view pending
Serving suite · 1 of 3 · view pending

Cream jug and sugar bowl

Observed in the cabinet and pattern-consistent with the settings; a dedicated photograph completes this slot — and is the capture that narrows the interval next. The white-and-gilt service on the lower shelf is a separate object with its own record available.

Scalloped cake plate behind nested cups
Serving suite · 2 of 3

Scalloped cake plate with nested cups

The scroll-edged cake plate standing behind three nested cups on stacked saucers and side plates — the depth of the stacks consistent with a twelve-person service.

Square sandwich tray with green ring centre
Serving suite · 3 of 3

Square sandwich tray, green ring centre

The most distinctive piece in the service and the natural listing photograph. Count confirmed at the full-layout session (illustrative): twelve settings plus five serving pieces; the service was retailed without a teapot — tea poured from the family silver, as was common for gilt afternoon services of the period.

Wedding photograph, September 1939
Document · custody & story

The wedding photograph — September 1939

The bride and the soldier, the groom in uniform weeks into the war. The dated origin of the service: a 1933-registered pattern given as a current pattern in 1939. The timeline checks.

The checks · ceramics profile · authority states shownEleven checks, five sources — one held open, honestly.
CheckSource · authority stateResult
Maker · trade name · winged-crown markBackstamp photograph · maker recordAuthority-resolvedMatch
Reg. No. 785452 on piece · 1933 registryBackstamp photograph · British Rd tableAuthority-resolvedMatch
Pattern family — gilt-encrusted, apple greenTrio photographAuthority-resolvedIdentified
Serving suite (5 pieces) · pattern consistencyCabinet photographsAuthority-resolvedObserved
Counted layout — twelve settings (illustrative)Full-layout sessionAuthority-resolvedConfirmed
Condition — raking light, interiors (illustrative)Full-layout session · minor gilt wear, two cup rimsAuthority-resolvedDocumented
Teapot — service complete as retailedFamily confirmation · period retail practiceDeclared-onlyResolved
Origin against pattern timeline1933 registration vs September 1939 giftAuthority-resolvedCoherent
Wedding photograph — date consistencyGroom in uniform · war declared 3 Sept 1939Authority-resolvedConsistent
Origin corroborated — the soldier independently documentedFamily graph · linked medal group (see below)Authority-resolvedCorroborated
Chain to present owner (mother → daughter)Family record — will extract would formaliseDeclared-onlyOpen

Why no curator flag: both primary identity keys for this category — the maker mark and the registered-design number — are authority-resolved against photographs on file. The open custody item is declared-only on a non-primary attribute; it holds the custody component at 72 and is named, but does not queue a review.

The family graph · Enrich
PersonThe brideBride · first owner of the service
PersonThe soldierMM recipient · Royal Artillery
EventMarriage · Sept 1939Photographed · weeks into the war
Object · this reportTuscan tea service, Rd 785452The wedding gift · PCS 85 ± 4 · Gold
Object · linkedMedal group, framedVerifies the soldier as a person — campaign medals: Africa Star (8th Army), Italy StarMedal group
DocumentWedding photograph, 1939Persons, event, and place in one frameWedding photograph 1939
Object · other lineSalisbury cup, pattern 2611Attribution corrected · PCS 68
Person · ownerThe present ownerDaughter of the couple · present owner, British Columbia
Public record · pending · off-platformMM citation · pending lookupLondon Gazette / WO 373 — belongs to the soldier’s person record, not this report's checks; retrieval pending, not "not found"

Each object corroborates the others; each addition strengthens the whole. The family is the institution.

Report attestation

Report IDPCS-CH-2026-0003 (demo)
MethodVerify (PCS) · ceramics profile
Data snapshot hash · SHA-256f1136743bac97884737583520f483cc58b2c54f40c5ff7b1cfd9e6d604db0378
Verify this reportverify.veradis.ai/r/PCS-CH-2026-0003 (demo)
Curator statusNo action required — primary identity keys authority-resolved

The veradis signature attests to data integrity, not authenticity. Photographs are individually hashed into the snapshot. Hash-chained at the permalink.

Reproducibility. Re-running this method against this data snapshot reproduces this score to the digit (pinned-seed deterministic pipeline; golden tests in CI). Falsifiability. This method returns Flagged, with the evidence, when an identity fails its checks; appeals resolve within fourteen days. A verification that cannot say no would be worthless — this one can.

This Provenance Confidence Score is a probabilistic verification report based on digital data analysis cross-referenced against the veradis.ai knowledge graph. It is intelligence, not insurance. The PCS reflects the probability of identity match, custody continuity, material integrity, and risk-profile cleanliness based on available data at the time of query. It does not constitute a legal certificate of authentication, a guarantee against loss, or an indemnity against fraud. For high-value transactions, buyers should conduct physical inspection by a qualified specialist. veradis.ai is not liable for financial loss resulting from reliance on this report.

How to read this report · terms, colours, and the ± number

PCS (Provenance Confidence Score). A 0–100 measure of how well today's evidence supports this object's claimed identity and history. It scores the evidence, not the object's worth — and it is intelligence, not a certificate.

The four components. Identity match (does the object match the claimed identity), Custody & story (is the chain of ownership documented), Material integrity (do the physical signatures check out), Risk profile (registries, sanctions, encumbrances). They combine at fixed, disclosed weights: 30% · 30% · 25% · 15%.

± 4 · the 95% credible interval. The honest range around the score: given today's evidence, the true score sits between 81 and 89 with 95% confidence. Checks that have not been run do not lower the score — they widen this range. New evidence always narrows it; it may or may not move the number in the middle.

Tier — Gold / Silver / Bronze. Assigned on the bottom of the interval, not the middle: Gold 80+, Silver 60+, Bronze 40+. We tier on what the evidence can defend. This report: lower bound 81 → Gold. A failed identity returns Flagged, with the evidence enclosed.

Coverage (12/12 views). How much of the category's capture protocol is on file — a separate axis from the score. Complete coverage is why this interval is tight.

Authority states. Authority-resolved — the value was confirmed against a named independent source (maker record, design registry) and earns full credit. Declared-only — stated in a record but not yet independently confirmed; half credit. Missing — not yet on file; no credit, wider interval.

Declared / Observed / Reference. What the record claims · what has actually been measured or photographed · the published benchmark it is compared against.

"Clear" in the registry sweep means no match in the named registry on the check date — it never means "not stolen."

The colours. Deep green — supported by evidence on file. Brass — an honesty mark: a gap named, a component under 80, an action still open. Grey — unscored, unmeasured, or the Silver tier. Hollow dot — a check held open. Dashed border — exists but not yet on the platform (a pending capture, an off-platform document). Source dots: public registries · photography & documents · risk registries.

Snapshot & hash. Every version of this report is frozen as a data snapshot and fingerprinted (SHA-256); each version carries its predecessor's fingerprint, so the history cannot be silently rewritten. Verify any version at the permalink.