(Adds dropped word "million" in first paragraph)

PARIS, June 19 (Reuters) - Boeing BA.N 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)

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Keywords: AIR SHOW/BOEING OMAN