A Deerfield Beach man has been arrested in the alleged theft of nearly $250,000 worth of precious metal coins, authorities said. Salvatore J. De Rosa, 34, was arrested by the Broward Sheriff’s Office on Thursday on a first-degree grand theft charge, records showed. According to an arrest report, on Nov. 13, 2024, the victim sent $246,599 of precious metal coins to who he thought was a legitimate gold and silver dealer named AMG Rarities for the …