How do you know if you have an original ansel Adams photograph in a sealed frame?

To determine if you have an original Ansel Adams photograph in a sealed frame, first check for a signature, as many originals are hand-signed. Look for a label or authentication from a reputable gallery or organization that specializes in his work. Additionally, examine the print for its characteristics, such as tonal range and clarity, which are hallmarks of Adams' technique. Consulting an expert or appraiser familiar with his work can provide further verification.