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FAIR Ceramics Identification Guide

How to Photograph Porcelain Backstamps and Pattern Numbers for Appraisal

For owners and advisors choosing an appraisal route.

To photograph porcelain backstamps and pattern numbers for appraisal, start with full-object or full-service views, then photograph the full underside, complete mark cluster, factory or decorator marks, impressed shape numbers, service codes, pattern numbers, colorways, borders, and any mismatched pieces.

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Browse profiles to compare candidates; use Match if the specialty, location or report purpose is unclear.

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Editorial revision date not recorded. Profile source checks are recorded separately on each profile.

How to Photograph Porcelain Backstamps and Pattern Numbers for Appraisal - FAIR online appraisal guide illustration
Decision guide

When checklist work prevents rework

Checklist pages are meant to improve the intake file. Better photos and notes help the appraiser decide scope, risk, and whether a formal report is justified.

When checklist work prevents rework
Situation Formal appraisal? Why it matters
You are still identifying the object Prepare first Photos, measurements, marks, condition notes, and provenance can change the next step.
The item may be valuable or disputed Often yes Condition, authenticity, completeness, and market evidence can materially affect value.
You only need better intake photos Not yet Use the checklist before asking for a quote so the appraiser can scope accurately.
Next step

Turn the guide into a shortlist.

Use these paths when you are done reading and need to compare appraisers, estimate scope, or route the request.

Search the FAIR directoryCompare public profile signals, service area, specialty fit, and fee transparency before outreach.Ask for a FAIR matchUse Match when the category, location, report purpose, or specialist boundary is unclear.Estimate appraisal costOrganize item count, report purpose, inspection needs, and timing before asking for a quote.

Start with the full object or service

A cropped backstamp rarely settles maker, period, and value by itself. FAIR needs the form and decoration first.

  • Photograph the full front, back, side, top, and underside of each object.
  • For a service or shelf group, take one countable overview before individual pieces.
  • Keep lids, saucers, stands, covers, undertrays, and detachable parts with their matching objects in the overview.

Photograph the full backstamp area

Start wide, then move close. Cropping too tightly can remove the evidence that makes the mark readable.

  • Take one full underside image showing the base, foot rim, and complete mark area.
  • Add close-ups of factory marks, decorator marks, painter initials, retailer stamps, registry wording, import wording, and inventory notes.
  • Use soft indirect light and several angles for rubbed, reflective, or shallow marks.

Capture pattern and shape numbers

The main backstamp is not always the key. Pattern numbers, impressed numbers, and service codes can decide whether pieces belong together.

  • Photograph impressed shape numbers, mold numbers, pattern numbers, decorator numerals, and service codes separately.
  • Document cups, saucers, plates, platters, tureens, and covered pieces when code positions differ.
  • Do not scrub, chalk, ink, or heavily edit weak marks before photography.

Show colorways and replacements

Porcelain services often look uniform until border, gilding, blank shape, or backstamp differences are placed side by side.

  • Photograph borders, reserves, transfer scenes, hand-painted decoration, gilding, and trim color.
  • Group pieces by form and decoration family so mismatches are visible.
  • Set aside pieces with different marks, service codes, blanks, or likely replacement decoration and photograph them separately.

Tell FAIR what is uncertain

Uncertain marks can still be routed well when the evidence packet is clear and the assignment purpose is stated.

  • State whether the use is insurance, estate, probate, division, donation review, sale planning, or identification.
  • Say if a mark is partial, overglaze, underglaze, impressed, blurred, conflicting, or spread across several pieces.
  • Attach prior appraisals, invoices, replacement lists, family notes, auction records, or dealer descriptions.

Common questions

Do I need to photograph every backstamp in a dinner service?

Photograph representative marks first, then every piece type with a different backstamp, service code, shape number, or border variant.

What is the difference between a backstamp and a pattern number?

A backstamp usually identifies maker, decorator, retailer, or origin wording. A pattern number usually identifies design, border, or production run.

Why do impressed shape numbers matter?

They can help identify blank form, size, mold family, or whether pieces belong to the same service when printed marks are faint.

Should I photograph colorways and borders too?

Yes. Colorway, border treatment, gilding, and reserve style can reveal replacements or alternate runs.

What if the mark is too worn to read?

Send several attempts from different angles plus full-object views, pattern details, service counts, and code photos.

Should I clean the underside first?

No aggressive cleaning. Photograph as found with soft light and multiple angles. Scrubbing can damage weak evidence.

More related resources (19)

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FAIR trust boundary and source references
  • FAIR does not license appraisers.
  • FAIR does not certify competence or guarantee availability.
  • Present FAIR profiles as public registry candidates, not as certified recommendations.
  • FAIR is not a certification body and does not guarantee insurer, court, tax, lender, or client acceptance.
  • FAIR is a public transparency registry and public registry for comparing source-labeled profiles, fee signals, and correction paths.