The picture in the ad is fuzzy but I can make out the word "Pepita".
Many Crescent models have borne the Pepita name but going by the picture it is the Crescent Super Continental aka. the Pepita Special racer, model no 92320. Made from the early 60's up to the late 70's or early 80's. 531 tubing, Campagnolo throughout except brakes that were Mafac.
"Sweden's most victorious bicyle of all times.
The world champion brothers of Vårgårda* ride it!
In continental style with more upright frame and straighter fork.
10 gears with dual levers. Frame sizes 21-25". In Crescent orange colour."
*The Fåglum (Pettersson) brothers that won three team time trial world champion titles in 1967-1969
and the silver medal in the 1968 Summer Olympics on this bike.