Preserving the original packaging and documentation of porcelain sculptures is essential for maintaining their value, authenticity, and historical significance. Here are the most effective methods to ensure their longevity:

1. Climate-Controlled Storage: Store packaging and documents in a stable environment with controlled temperature (18-22°C) and humidity (40-50%) to prevent deterioration from moisture or heat.

2. Acid-Free Materials: Use acid-free boxes, tissue paper, or sleeves to protect documentation from yellowing or chemical reactions over time.

3. UV Protection: Keep packaging away from direct sunlight or fluorescent lighting to prevent fading or discoloration. Consider UV-filtering glass for displayed items.

4. Digital Backups: Scan or photograph certificates, authenticity cards, and original labels to create digital copies as a failsafe against physical damage.

5. Handling Precautions: Always wear gloves when handling delicate packaging to avoid transferring oils or dirt. Store boxes upright to prevent warping.

For high-value pieces, consult a professional conservator for customized solutions. By following these steps, collectors can safeguard the integrity of their porcelain sculptures' original materials for generations.