Knocked out
Mike Perry pulled out all the stops to troll Jake Paul ahead of their big fight on Saturday ... commissioning a custom pendant showing El Gallo getting his bell rung -- and it's quite the pricey piece.
Perry's been proudly sporting the new jewelry leading up to the bout ... rocking it at his open workout and press conference for the showdown in Tampa, FL.
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The pendant shows Jake's face covered with bloody cuts and a boxing glove on his left cheek .