Preserving the original patina of antique porcelain sculptures is essential to maintaining their historical value and aesthetic appeal. The patina, a natural sheen developed over time, reflects the sculpture's age and authenticity. Here are the most effective ways to protect it:

1. Gentle Cleaning: Use a soft, dry brush or microfiber cloth to remove dust. Avoid harsh chemicals or abrasive materials that can strip the patina.

2. Controlled Environment: Store sculptures in a stable environment with moderate humidity (40-60%) and temperature (18-22°C) to prevent cracking or discoloration.

3. Minimal Handling: Wear cotton gloves when handling antique porcelain to prevent oils and dirt from transferring to the surface.

4. UV Protection: Display sculptures away from direct sunlight or under UV-filtering glass to prevent fading.

5. Professional Restoration: Consult a conservator for repairs or deep cleaning to avoid damaging the patina.

By following these methods, collectors can ensure their antique porcelain sculptures retain their original charm and value for years to come.