A Vintage Educational Set Comprising a Foam Number Die and Oversized Cards

A vintage educational or magic performance set featuring a large yellow foam die and a collection of oversized cards. The die is constructed from yellow foam with red felt numerals applied to the faces, with the numbers two and four visible. The accompanying cards are produced from white laminated cardstock or plastic, featuring bold black numerals and mathematical symbols. Visible characters on the cards include the numbers one, three, and seven, along with a plus sign. The set comprises one die and a partial stack of cards; the exact number of cards required for a complete set is unverified. No manufacturer branding, marks, or labels are present on the items.