Two bold rounded sans serifs that both originated in London around the same time, used together on a typographic sleeve for a single by the Barron Knights.
The name of the humorous pop rock group is shown in a two-color setting of Pluto Outline, additionally enhanced with a drop shadow effect. Pluto originated as a film typeface at Face Photosetting in 1969–1970. The four-style family also included a solid variant. However, the Outline style was the only one to be adopted by Letraset for dry transfer lettering (in 1972). It thus became more widespread.
The song names are added in Frankfurter, a similar “sausage” typeface that was designed by Bob Newman and issued as a Letraset original in 1970. In 1978, Letraset added Frankfurter Highlight.