Documenting and cataloging a collection of porcelain sculptures requires a systematic approach to preserve their artistic and historical value. Here are the best methods to ensure accuracy and longevity:

1. High-Quality Photography: Capture detailed images from multiple angles under consistent lighting to highlight textures, colors, and markings. Include a scale reference for size.

2. Detailed Descriptions: Record dimensions, glaze types, artist signatures, and provenance. Note any damage or restoration work to maintain transparency.

3. Digital Cataloging Software: Use specialized tools like Artwork Archive or FileMaker Pro to organize entries with searchable metadata, including dates, origins, and exhibition history.

4. Condition Reports: Regularly update records with conservation notes, environmental exposure, and handling guidelines to prevent deterioration.

5. Provenance Research: Trace ownership history through invoices, exhibition records, and expert appraisals to authenticate and enhance value.

6. Backup Systems: Store digital files in cloud-based platforms and physical copies in acid-free folders to safeguard against data loss.

By implementing these methods, collectors and institutions can ensure their porcelain sculptures are meticulously preserved for future generations.