Diversified non-bank financial services firm Liberty has launched what is likely to become its 19th non-conforming RMBS. The transaction was sponsored by Liberty Financial Pty Ltd. "The transaction is an Australian prime and non-conforming RMBS secured by a portfolio of residential mortgage loans. A portion of the portfolio consists of loans extended to borrowers with impaired credit histories (18.9 per cent) or made on a limited documentation basis (1.9 per cent). Moody's Investors Service has assigned the following provisional ratings to the notes:  A$ 225.0 million Class A1-a Notes, Assigned (P)Aaa (sf) A$ 130.0 million Class A1-b Notes, Assigned (P)Aaa (sf) A$ 72.5 million Class A2 Notes, Assigned (P)Aaa (sf) A$ 28.0 million Class B Notes, Assigned (P)Aa2 (sf) A$ 15.0 million Class C Notes, Assigned (P)A2 (sf) A$ 10.0 million Class E Notes, Assigned (P)Ba2 (sf) A$ 3.0 million Class F Notes, Assigned (P)B1 (sf) The Class G and below notes are not rated by Moody's."The ratings address the expected loss posed to investors by the legal final maturity. The structure allows for timely payment of interest and ultimate payment of principal by the legal final maturity," Moody's said in a pre-sale media statement.