A recording of a 'John Mystery,' singing card, printed as a Christmas card, with a 9cm diameter flexi-disc inside. These were considered a bit of a novelty at the time and were (relatively) cheaply made, able to be played on standard record players. You will notice this recording has a slight pitch-shift effect, that comes and goes in cyclic pattern. This would be due to the central hole not being perfectly centered, leading to an imbalance of audio decoding - not unlike the feeling you get when going round-and-round on a spinning top in the playground!
Original recording was on a 9cm flexi-disc. Image is of the actual greeting card record.