Tom Kuhn No Jive 3-in-1 Junior made from maple and stained red and yellow. While the yo-yo itself does not say "Junior" anywhere on the box or on the yo-yo, it was sized slightly smaller than regular, full-size No Jives. Everything else -- from the aluminum hexagonal nuts to the wooden axle sleeve, axle rod, and imprint -- is identical.
It is possible that the halves on the model in this exhibit were swapped... or not. It was sold in its No Jive-branded box. Compare the imprint of this version with the imprint found on David Hall's Tom Kuhn, No Jive Junior. The one thing consistent between the version in this exhibit and David Hall's version is that both have the same imprint on both halves. Perhaps that was intended by design.
Besides yellow/red body halves, you can also find this model with purple/red, green/red, or blue/red body halves. Other bi-color combinations may also exist.