Belgium did the same thing with 8-tracks in '73.

I remember getting a couple of 6 or 7-inch "flexies" in the mail back in the 70's. They were tucked inside magazines like subscription cards. I think it was an advertising gimmick for Time-Life Records: the classical-music equivalent of one of those "greatest hits of the 60's" commercials that used to be (?) on TV. "Don Giovanni! The late piano concerti! The immortal Requiem! And so much more! All for the low, low price of..." They were fun. You could play them a few times before they wouldn't work any more, and then you could leave them in the sun and watch them wrinkle up.

@2 there was a technical SNAFU Friday, what you see now is as it was supposed to be.