The specific gift that Balthazar, traditionally identified as one of the Magi, brought to the baby Jesus is not known. The New Testament states that the Magi brought gifts of gold, frankincense and myrrh to the baby, but does not associate any particular gift with a specific person.
Although Balthazar is named as one of the Magi, or Three Wise Men, by Christian tradition, he is not named as such in the Bible. The New Testament does not identify any of the Magi by name. It merely relates that a group of distinguished men bearing three gifts visited Jesus shortly after his birth.