The first is Sikorsky S-61, Japan, Nomura. Scarce helicopter, when friction engages, propellers and motor spin inside the helicopter body, working, may have sparked at one time, minor creases in two blades, excellent to near mint condition, 11". The second is a tin litho, friction Sparkling Helicopter, Japan, Alps. Propeller revolves, needs flint to spark, working, marked "UP-36", "AF-52" and 1637" on both sides, near mint, 8". Includes original box near mint. Condition: Dimensions: 10 - 1/2" x 9".