(Adds dropped word "million" in first paragraph)
PARIS, June 19 Boeing said on Wednesday it had won a firm order from Oman Air for five 737-900ER planes valued at $473 million at list prices.
The order was previously logged as being from an unidentified customer.
It marks the first order for a 787-900ER from a Gulf customer. Oman Air now has six 737-800 and five 737-900ER planes on order. (Reporting by Alwyn Scott; Editing by James Regan)