High-value bronze sculptures are prized for their artistic and historical significance, making authenticity verification crucial for collectors and investors. Several certifications and markers help confirm the legitimacy of these artworks.

1. Foundry Marks: Reputable foundries often stamp their name or logo on bronze sculptures, indicating where the piece was cast. These marks are typically located on the base or back of the sculpture.

2. Artist Signatures: Authentic bronze sculptures usually bear the artist’s signature, either engraved or cast into the metal. Comparing the signature to known examples can help verify its legitimacy.

3. Edition Numbers: Limited-edition bronzes are numbered (e.g., "1/50"), with the first number indicating the piece’s place in the series. Lower numbers often hold higher value.

4. Certificates of Authenticity (COA): Issued by galleries, auction houses, or the artist’s estate, a COA provides details like the sculpture’s title, edition size, and creation date.

5. Patina and Aging: Genuine bronze develops a natural patina over time. Experts examine the oxidation patterns to distinguish authentic pieces from replicas.

6. Provenance Documentation: Historical records tracing the sculpture’s ownership chain add credibility, especially for antique bronzes.

By examining these markers, collectors can confidently assess the authenticity and value of bronze sculptures, safeguarding their investments in fine art.