Airfix 1/72 Kamov Ka-25A/C AO903042

With its unusual rotor arrangement, this helicopter was first seen as a prototype during the Soviet Aviation Day display of July 9, 1961. Two sets of main rotors, operating alternately give the Kamov more lift and make a tail rotor, as used on the Seasprite, unnecessary, The Kamov has been code-named "Hormone" by the West. Its emergency flotation system give the crew extra minutes to escape if the helicopter is 'ditched' in the sea and also increases the chances of salvaging this expensive piece of hardware. 

This is an older kit.