[ Ref. Lee Rothrock in 210220 MMDigest ]

The miniature phonograph is fair dinkum [genuine] as a more developed
version of it appears in a Maxwell Smart episode. Interestingly, the
disc has similar tracks to the one in the "Wild Wild West" episode.
See https://getsmart.fandom.com/wiki/Charm_Record 

Jase Haysom
Victoria, Australia