A plastic yo-yo filled with Topps brand pellets of candy. You accessed the candy by removing the plastic orange plug in the center of each halve.
This yo was most likely also sold throughout Europe because the ingredients label is multi-lingual.
Of interest... To see all hollow filled yo-yos in this museum, in the left panel, select Exhibits. In the right pane, in the Name/Model field, type filled, then select Browse.
