Jasper Auction House
Seller Guide · East Texas

Antique Condition Guide.

Evidence-based grading and preservation to set clear expectations and protect value.

A–D grading overview

Use a four-tier model for quick, shared language between sellers and bidders:

  • A — Excellent: original finish, minimal wear; no repairs.
  • B — Very good: honest wear; stable minor flaws; no overpaint.
  • C — Fair: visible flaws or repairs/losses; structurally stable.
  • D — Poor: structural issues, heavy loss, non-functional or parts.

Rarity, maker and provenance can offset discounts; grade is a baseline, not a verdict.

Material specifics

  • Porcelain/enamel: flea-bites (A/B), stabilized cracks (C), large losses/overpaint (D).
  • Painted wood: original paint & light rub (A), touch-ups (B), repaint & repairs (C), structural splits (D).
  • Metal: stable patina (A), small dents/oxidation (B), pitting/brazed joins (C), active corrosion (D).
  • Textiles/paper: intact edges (A), minor fray/foxing (B), mended tears/stains (C), brittle/losses (D).

Scientific condition reporting

  • Raking light shows inpainting, surface waves, crazing.
  • UV check reveals newer fills/adhesives; note fluorescence.
  • 5–10× loupe for crack bridging, tool marks, fiber direction.
  • Scale photos with ruler/coin; macro for defects and marks.

Document methods and angles; consistency prevents disputes.

Condition vs. authenticity

Condition = physical state; authenticity = correctness of maker/materials. A Grade B original can beat a “perfect” replica. Keep restoration minimal and disclosed to preserve authenticity and market trust.

Common seller mistakes

  • Polishing historic metals — removes evidence of age and lowers value.
  • Household glues on ceramics — use conservation-grade adhesives.
  • Poor storage in humid garages/attics — warping, corrosion, mildew.
  • No macro photos — buyers need defect & mark close-ups.

Checklist before consignment

  • Neutral light inspection; note structural integrity.
  • List prior repairs or missing parts.
  • Prepare concise written report + macro photos.
  • Discuss realistic reserve with a specialist.

Plan bids with the Fees Calculator and browse East Texas Events.

Frequently Asked Questions

Does patina lower value?

Stable, original patina can be value-neutral or positive; active corrosion is negative.

Is restoration bad?

Conservation that stabilizes structure is acceptable; invasive repainting or fills must be disclosed and typically reduce value.

How do you grade cracks in ceramics?

Hairline/no loss: B. Stabilized with fill: C. Open structural or multiple losses: D. Include macro photos.

How should antiques be stored in humid Texas climates?

Stable temperature, silica gel, and ventilation; avoid sealed plastic or damp storage.

Should old metals be polished before selling?

No — keep stable patina; over-polishing removes value and historical evidence.