Go immediately to the Tacoma Police and report the trumpet. I think you mentioned you have the serial numbers. They will need it. Most police departments have a way to fax or report to the pawn shops stolen goods. They may do it by email these days. You won't get it back if you don't try to report it to the police. More than likely the person who stole it is not a trumpet player. The pawn shops will be on the lookout for a person pawning who can't play the horn. They will ask what it is worth. If the person doesn't know they call the police. Git'erdone now.