Perth man Joseph Da Silva has been missing since April, but that won't stop his mother setting a place for him at the Christmas table this year. Angela Broadley concedes the seat will almost certainly remain empty, but she still holds out hope that he is out there somewhere, safe and well Mr Da Silva's disappearance has baffled police, but he is just one of about 300 people on the State's long-term missing persons list — some of the cases go back as far as 1950.