The assessment of porcelain sculptures by auction houses involves a meticulous multi-step process that combines art historical knowledge with scientific analysis. Professional appraisers begin with a thorough visual examination under natural and artificial light to identify surface imperfections, hairline cracks, or restoration work. They document every detail including glaze consistency, color vibrancy, and any signs of wear or damage.

Specialists then examine the piece's provenance and artistic significance, consulting archives and maker's marks to authenticate age and origin. Advanced techniques like ultraviolet light reveal invisible repairs, while X-ray fluorescence may be used to analyze clay composition. The sculpture's condition is graded on standardized scales considering factors like structural integrity, original parts preservation, and restoration quality.

Market comparables play a crucial role, with experts reviewing recent auction results for similar pieces. They consider current collecting trends, rarity, and the artist's reputation. Final valuation combines the physical assessment with market data, resulting in pre-sale estimates that reflect both the object's intrinsic quality and its position in the current art market. This comprehensive approach ensures collectors receive accurate, transparent evaluations of these delicate artworks.