King has had the famous trophy at his house this week in what he admits has been a surreal build-up to the fourth-round tie at Moss Rose.
The Silkmen are one of only two non-league clubs left in this year's competition and face top-level opposition with the benefit of home advantage.
Such a no-frills environment should give the tie a classic FA Cup feel and provide King with the opportunity to test his mettle against a top-flight manager with whom he feels he has a lot in common.
"I wanted to play Wigan because for a Premier League star to turn up here and have 6,000 spectators virtually standing on their backs is going to be a culture shock," he said.
"Not only that, Roberto Martinez is my style of manager. He plays the kind of football I like.
"He won't compromise no matter what, which is just the same as me. It is nice to be up against someone like that."
Whatever the outcome of the game against Wigan, Macclesfield have already made FA Cup history this season, reaching the fourth round for the first time in the 139 years since their formation.
"It is surreal," said King. "To be part of the last 32, with the opportunity to create an upset is unreal.
"It has taken the club 139 years to get to this point. We did it in six months."