- Yankee Legend Mariano Rivera has personally hand-signed this 'Mo Day' 8x17 Panoramic Photo. Mariano Rivera is simply the greatest closer who ever lived, and is one of the most beloved figures in American sports. His autograph is a must have for any true sports fan. This Mariano Rivera autograph is guaranteed authentic and includes a Steiner Sports Certificate of Authenticity and an accompanying tamper-evident Steiner Hologram. The Steiner Seal Means It's Real. Steiner Sports is the Official Memorabilia<
- Partner of Mariano Rivera and the New York Yankees.
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