There were some INDIAN flexidisks too.
If I am not mistaken Nasir Hussains -Rishi Kapoor Starrer Zamane Ko Dikhana hain - there was a promo flexidisk. My father who worked there brought that to show uwand I remember he claimed it is first time in India. ( There was intense rivalry bet Music India and Big Bro HMV so really do not know how true it was.
Can any knowledgegable forum members help??
http://en.wikipedia.org/wiki/Flexi_disc
The flexi disc (also known as a phonosheet or Soundsheet, a trademark) is a phonograph record made of a thin, flexible vinyl sheet with a molded-in spiral stylus groove, and is designed to be playable on a normal phonograph turntable. Flexible records were commercially introduced as the Eva-tone Soundsheet in 1962,[1][2] but were previously available in the Soviet Union as "rentgenizdat", "bones" or "ribs", underground samizdatrecordings on x-ray film.
Also in 70's- 80's flexidisk was common and there were some music mags - where flexidisk(s) were given with magazine - like many music mags used to give CD's congaing sample / free tracks.
While buying and selling records once I received a call where the person was flexidisk collector (from India) and looking exclusively for flexidisks....