Identified WWI Royal Flying Corps Pilots Cap

WWI Identified Royal Flying Corps Pilots Overseas Cap.  High quality wool body. Cut in typical English style. The two small buttons on the front have beavers on them but can't make out the words around it. On the left side is the RFC badge. The interior is an unusual quilted silk like material. Written in ink is the name 2/LT TW BELLAR. Doing some very basic searches we found where is is credited with two kills, but didn't do much more searching after that. Has been worn but still in great shape.  NCR