CUA has made a successful return to the residential mortgage-backed securities market after an absence of three years. Yesterday, the mutual priced a A$675 million issue, the Series 2013-1 Harvey Trust, which was upsized from the $500 million offered at its launch last week.The $627.75 million A tranche, which has a weighted average life of 3.5 years, was priced at 100 basis points over the one-month bank bill swap rate.The $31.7 million AB tranche, which has a weighted average life of 6.2 years, was priced at 170 bps over swap. The $12.1 million B1 tranche, with a weighted average life of 6.2 years, was priced at 290 bps over swap. The $3.4 million B2 tranche, with a weighted average life of 6.2 years, was priced at 340 bps over swap.Moody's and Standard & Poor's rated the A tranche at AAA. S&P rated the AB tranche at AAA and the B1 and B2 tranches at AA-.CUA's pricing is in the middle of the range for recent issues. Last Friday, Firstmac announced that it would pay 110 bps over swap for the top tranche of its latest issue.And, last month, Suncorp priced the $1 billion A tranche of its latest issue at 95 basis points over swap. ING Direct also priced the top tranche of its latest deal, which was issued in March, at 95 bps over swap.CUA said in a statement that overseas investors bought 30 per cent of the issue. Financial investors bought 70 per cent of the issue.Deutsche Bank and Westpac were the joint lead managers for the issue.