Watch List notes:

Egypt, Alexandria Antoninus Pius, 138-161 Tetradrachm circa 159-160 (year 23), billon 24.5mm., 11.68g. Radiate bust r., drapery on l. shoulder. Rev. Nilus seated on rocks, l., resting elbow on sphinx, holding reed and cornucopia; before, at feet, small half-figure of Euthenia reclining, r., reed(?) over shoulder, raising hand. RPC Online 15640. Dattari-Savio 8215.

Very rare and interesting, only two specimens cited in RPC. Very Fine/About Very Fine.