There are 2 Mark Brennan trading cards tracked on HobbyCardIndex, spanning Baseball, Soccer. The most valuable is the Mark Brennan #132 at $3.41 raw.

Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/mark-brennan

Mark Brennan Cards

2 cards · Baseball Soccer

All Mark Brennan Cards

Mark Brennan #132

1992
$3.41

Mark Brennan #4

2005
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