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Stanley Witcher published this technique as “A Novel Card Sleight” in The Magazine of Magic, Vol. 1 No. 3, Jan. 1915, p. 117. The now common handling was described by Arthur Buckley in Improved and Original Card Problems Vol. 2, 1924, p. 23 of the combined booklet. In Card Control, 1946, p. 76, Buckley claims he had been using the toss change since 1910, and does “not know of its publication elsewhere,” which suggests he believes he may have been the first to conceive this sleight.
In 1928, Jack Merlin described the technique in Merlin's Master Miracles, 1928, p. 78 of the combined booklet. Merlin's routine contains most of the handling and psychological touches that later appeared in the handling attributed to Derek Dingle under the title, “The Alpha Toss,” in Richard's Almanac, Vol. 1 No. 1, Sep. 1982, p. 1.