This is an OS Max 19 steel finned airplane engine with its original box. Included in box are the original instruction sheet and an additional venturi, throttle tube and needle valve assembly that has a larger opening in the venturi than the one shown on the engine. The engine appears to have been run, but very little as it has some burnt fuel stains on the head. The rubber exhaust plug is cracked and starting to crumble from age. It looks as though the engine was not properly cleaned when last put away and the crank does not turn at this time but I am certain it can be easily freed and will turn over as good as new. As you can see in the pictures, the castings are bright and shiny and it is obvious this engine has had very little run time. Don't let this collectible little gem pass you by. I guarantee you won't be disappointed!