(This one was on Rich's 'Unknown Movie List'.)
It is a story about 12 or 13 years old girl in the middle of 60's in USSR. She is a pioneer. She is in love with her pioneer leader - 16-17 years old boy, who doesn't even notice her. In order to impress him she tries to find someone, who was a member of pioneer squad in 1923 - one of the first Soviet pioneers.
The DVD is available:
http://www.ruslania.com/entity-3/contex ... -1451.html
Found this on a very interesting Russian website: