Value Engine Accuracy, Confidence and Correction Policy

Values are estimates supported by evidence, not guarantees

Collector markets change. A published range reflects the evidence available at the time of calculation and may differ from a future sale.

Confidence factors

• Number of relevant sales
• Recency of evidence
• Variation-match quality
• Condition consistency
• Source reliability
• Market volatility

Corrections

Records may be corrected when stronger photos, packaging evidence, official information or reliable collector documentation becomes available. Major changes should preserve an audit note explaining what changed.

The Value Engine should show insufficient evidence rather than invent a precise value.