By Robert Hogg

LONDON, May 23 (IFR) - The Sultanate of Oman has revised pricing for a seven-year US dollar benchmark-sized sukuk offering to 250bp area over mid-swaps, according to a lead.

The notes were initially marketed at plus 270bp area.

The order book is in excess of US$5.2bn, including lead manager interest.

Pricing is as early as today via Alizz Islamic Bank, Citigroup, Dubai Islamic Bank, Gulf International Bank, HSBC, JP Morgan and Standard Chartered (B&D).

The sovereign had signalled the possibility of an additional 12-year sukuk in its mandate announcement but no further details have been provided on that tranche.

Expected issue ratings are Baa1 by Moody's and BBB by Fitch.

(Reporting by Robert Hogg; editing by Sudip Roy) ((Robert.Hogg@thomsonreuters.com; +44 207 542 9077;))