Watch List notes:

The Collection of Roman Republican Coins of a Student and his Mentor Part III

C. Calpurnius Piso L. f. Frugi. Denarius 67, AR 3.92 g. Head of Apollo r., hair bound with fillet; behind, curled feather. Rev. Horseman galloping r., wearing kausia and carrying palm branch with fillet; below, C·PISO·L·F·FRVGI. Babelon Calpurnia 24. Sydenham 862. C. Hersh, NC 1976, 406. Crawford 408/1b.
Of superb style, light iridescent tone and good extremely fine
Ex Sotheby's sale Zürich 27-28 October 1993, 1244 (misdescribed).