• This 4" X 6" print of a Hiller OH-23 "Raven" helicopter has a military green frame that measures 8.5" X 6.5".  The OH-23 Raven was used as an observation, MedEvac and utility helicopter during the Korean War.  The frame comes with a drywall screw for mounting on a wall and a dowel for displaying on a shelf or desk.  It is a unique item for all aviation enthusiasts to display.