The second of two Mil V-12 prototype helicopters, powered by four Soloviev D-24VF turboshaft engines. This aircraft first flew in March 1973 and was given to the Monino Museum in 1975, after the cessation of the development programme in 1974. It went on display as seen here, without a registration. Unfortunately in 2012 it was made to look like the first prototype by falsely painting it with that helicopter's registration CCCP-21142. The registration with which this second prototype actually flew during its operational life is unknown.
This photo was added on 17 September 2018, and has since been viewed 67 times.