Square card with star-shaped bubble that seals the yo-yo on the card. An uncommon Duncan card. Plus, the airbrushed paint is half light blue and half white, not all light blue with a white stripe through the middle portion. The rarely seen card and paint on the yo-yo suggest that this version may have been among the last Duncan crossed flags "Tournament" model no. 1077 that they manufactured before going bankrupt in 1965. The paint scheme is similar to the paint scheme that Strombecker used when they bought the production equipment from Duncan following bankruptcy (see Medalist Trickmaster 1 and Medalist Trickmaster 2).
The back of the card has instructions for getting your Duncan yo-yo ready and ordering your Giant Book of Duncan Tricks for 25 cents (see Duncan Trick Book No. 16 from 1961).