This is an Id'd uniform grouping that belonged to an American contract flyer for RAF Ferry Command. Even the civilian contract flyers, that flew for RAF Ferry Command, were required to wear a uniform of some sort in case of bailout and capture. This uniform is in actuality a US "suntans' 4 pocket service jacket, with Ferry Command rank and insignia added. The jacket buttons are all nickle RAFFC . The photo is of this gentleman wearing this very jacket. He first flew for Ferry Command and then later joined the British ATA. I believe that the sleeve rank is for a Captain. Ferry Command retained commercial airline ranks, 1st Officer, 2nd Officer, Captain etc. I'm not totally up on the commercial rank system so just not 100% sure of his rank. If anyone out there knows for sure it would be appreciated if you passed that along.