MADRID, Jan 10 (Reuters) - Spain launched a syndicated sale of a 10-year benchmark bond on Wednesday with initial demand surpassing 72 billion euros , according to a memo from a lead manager seen by Reuters.

The bond, maturing on April 30, 2034, was guided to pay a spread of around 11 basis points above Spain's outstanding 10-year bond due in October 2033, the memo said.

The country, which intends to issue 55 billion euros worth of government bonds this year, hired Barclays, BBVA, Credit Agricole, Deutsche Bank, JPMorgan and Santander to sell the new bond.

($1 = 0.9142 euros) (Reporting by Inti Landauro and Yoruk Bahceli, editing by Emma Pinedo)