(Adds review details)
Sept 8 (Reuters) - Property and casualty insurer State Auto Financial Corp said on Friday it was considering options for its excess and surplus lines business, including a sale.
The review includes Rockhill Insurance Co, which State Auto acquired in 2009 to enter the E&S market.
The E&S business comes under specialty insurance, the smallest among the Columbus, Ohio-based company's three units.
State Auto, which has a market valuation of about $981 million, said it had retained Keefe, Bruyette & Woods to advise on the evaluation. (Reporting by Nikhil Subba in Bengaluru; Editing by Maju Samuel)