My best guess is that this record was either offered to phonograph dealers when these new, Motorola 3 Amplifier Stereophonic High Fidelity phonographs were released, or it accompanied the unit upon its purchase. Either way, this was a 10-track compilation record containing handpicked material that best showcased these 3 amplifier units.
A quick Google search reveals a vintage advert from 1960, featuring two of these (extremely expensive) 3 amp units. The SK28 model goes for a whopping $329.95 ($2522.93 adjusted for inflation) where as the smaller model retailed for $299.95 ($2293.54 adjusted for inflation). Lucky for the folks of the late 50s, early 60s, this particular advert offers a payment plan, starting with $10 down ($76.46 adjusted for inflation). Something seems WAY out of whack here, but I don’t have time to give it any more thought.
I never owned the record that this sleeve swore to protect, but it’s nice to see Motorola’s logo hasn’t changed in the past 54 years.