Brendan Donovan Signed Mariners Mini Batting Helmet JSA

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Seattle Mariners Signed Mini Helmet

Brendan received his Gold Glove Award in 2022, his Rookie season with the St Louis Cardinals. He also made the All Star Team in 2025.

Autographed by Brendan Donovan at Northwest Sportscards in Tacoma, WA.

This signature was witnessed and authenticated by a JSA representitive April 1st, 2026.

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