Below is the answer I finally got from the Penn Museum: they still have the tops in their collection!
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The Penn Museum has undergone several name changes, beginning as the Museum of Science in Art, The University Museum, The Museum of Archaeology, and currently the Penn Museum. We are not nor ever have been the Pennsylvania Museum.
The Penn Museum does have spinning tops in its collections, which are geographically / culturally organized.
We have spinning tops in the African, (Native) American, Asian, Egyptian, and Oceania curatorial sections.
We also have spinning tops in the Historic European/American sections, which closed in 1929 because this area/period was outside the museum's scope of study.
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Registrar Records
Penn Museum
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Now we need to track down the collection that Professor Wilson was going to bequeath to the Smithsonian . . .