* FTSEurofirst 300 down 0.1 pct; gains for 4th quarter
* Banks among top losers, but Bank of Ireland jumps 24 pct
* Miners gain on stronger gold, base metals prices
By Atul Prakash
LONDON, March 31 (Reuters) - European shares edged lower on Wednesday as disappointing U.S. economic data ahead of Friday's crucial jobs numbers prompted investors to trade cautiously, but the market still posted its fourth consecutive quarter of gains.
Financials were among the top losers on Wednesday, with the STOXX Europe 600 banking index <.SX7P> falling 0.5 percent after climbing in the previous session to its highest in more than two months.
The FTSEurofirst 300 <
> index of top European shares closed 0.1 percent lower at 1,078.58 points after rising as high as 1,083.66. It hit an 18-month high on Tuesday.The index, which is up around 67 percent from its record low in March 2009, gained 3.1 percent during the Jan-March period after rising in the previous three quarters.
"The next quarter should, on balance, be positive again because over the course of the quarter we will see a further reduction in sovereign credit risk," said Klaus Wiener, head of research at Generali Investments.
"Despite today's numbers, we will see a positive employment report on Friday," he said. "Valuations are fair. They are not stretched, especially now since earnings are rising."
Stocks in the FTSEurofirst 300 trade at an average of 14.6 times earnings, according to Thomson Reuters data. The average price-to-earnings (P/E) ratio has been drifting lower since peaking at 15.9 in mid-January, following relatively strong corporate results.
This compares with a current P/E ratio of 17.5 percent for Wall Street's S&P 500 index <.SPX>.
Bank of Ireland <BKIR.I> spiked 24 percent after it said it will raise from private sources much of the 2.7 billion euros ($3.6 billion) it needs, potentially becoming the only member of Ireland's "bad bank" scheme to escape a fresh bailout.
But banks generally fell, with HSBC <HSBA.L>, BNP Paribas <BNPP.PA>, Societe Generale <SOGN.PA>, Credit Suisse <CSGN.VX>, National Bank of Greece <NBGr.AT>, EFG Eurobank Ergasias <EFGr.AT> and Piraeus Bank <BOPr.AT> down 0.3 to 2.9 percent.
Moody's Investors Service downgraded its rating on five Greek banks, citing their weakened financial strength and pressures from the country's fiscal challenges. [
]A Reuters poll of 47 leading investment houses across the world showed investors cut back on equities and lifted exposure to bonds in March. [
]
ECONOMIC DATA WEIGHS
The equity market came under pressure after data showed U.S. private employers unexpectedly shed more jobs in March. Business conditions in New York City slipped, while business activity in the U.S. Midwest expanded less than expected in March.
"Markets were rocky at the peak of the Greek crisis, but now volumes have fallen again," said Jacques Henry, analyst at Louis Capital Markets, in Paris.
"Unless we get some sort of surprise on the macro data front, like with the payrolls this week, the market might move sideways for a bit."
Closely watched U.S. March non-farm payrolls numbers are due on Friday when many equity markets around the world are closed for the Easter holiday.
Volumes on the FTSEurofirst 300 were 95 percent of its 90-day daily average.
Miners were in demand as gold <XAU=> hit its highest in more than a week on a weaker dollar and nickel <MNI3> climbed to its highest in more than 21 months on supply shortages and robust demand from stainless steelmakers.
Anglo American <AAL.L>, Antofagasta <ANTO.L>, Rio Tinto <RIO.L>, Xstrata <XTA.L> and ENRC <ENRC.L> rose 0.2-1.5 percent.
Among individual shares, Ericsson <ERICb.ST> rose 2.7 percent. The company said it had won a $1.3 billion network expansion contract from top Indian operator Bharti Airtel <BRTI.BO>, its third major order in three days, and its largest deal in eight months. [
]For factboxes on the performance of European shares in Q1, click on: [
] [ ](Additional reporting by Blaise Robinson in Paris; Editing by Erica Billingham)