But where else would you keep it? A safe-deposit box at a bank?
I think, if I received illegitimate gold bars and figured the FBI might look into that, I would choose to keep them somewhere where a judge would think twice before issuing a search warrant for. Judges don't generally just issue search warrants for residences willy-nilly (because there can often be collateral damage); they're much more blasé about issuing search warrants for safe-deposit boxes.
Or are you imagining he'd go bury the gold in a hole in the woods somewhere?