Update: This information has also been posted on the Ordinariate’s web site:
This is a quote from “The Anglican Use of the Roman Rite Blog”
During the Mass Fr. Steenson, a professor and former Episcopal bishop, will be installed as the first Ordinary and given the title of Monsignor. Cardinal Wuerl, delegate for the implementation of Anglicanorum coetibus, the document authorizing ordinariates, will read the Vatican’s official letter of appointment and present Msgr. Steenson with symbols of his office: a crozier (pastoral staff representing his role as a spiritual shepherd) and miter (tall hat worn during liturgies representing his authority).
Read the whole article here.
Here is an archive picture of Father Steenson when he was bishop of the Rio Grande in the Episcopal Church USA. Following this Sunday’s ceremony he will again be vesting similarly.