Original Green MBU-12 Oxygen Mask Face Piece with MBU 12 green Strap Set, Unfortunately, 2 screws for attachment are missing, all in very good, used condition ,face piece size Extra Long , Date 1985,Please note that all our items are pure collector items or display items. The items are not tested for real use and have no aeronautical exams or clearances. Use is at your own risk !