Egypt, Alexandria. Salonina, wife of Gallienus, Augusta 254-268. Tetradrachm (Silver, 24.00, 12.55 g). Dated RY 6 (of Valerian I and Gallienus) = AD 258/9. KOPNHΛIA CAΛѠNEINA CЄB Draped and bust right, wearing stephane. Rev. Eagle standing left, head right, holding wreath in beak; L Ϛ (date) across field. Geissen 2964. Dattari-Savio 5321. K&G 91.20. Emmett 3747.6. Kellner p. 133, p. 15, Fig. 4 (this coin). Fully silvered and rare as such. Lightly toned, some minor porosity. Very Fine. Ex A.K. Collection (Triton XXIII), 14.01.2020, lot 835 (part of): purchased privately by A.K. from Münzen und Medaillen AG, 1970. Ex CNG, E-Auction 463, 11.03.2020, lot 286. Tetradrachm of large diameter and increased weight, an extremely rare coin to be minted in full silver perhaps for ostentation. Perfectly centred with on the obverse the canonical portrait of Salonina and on the reverse the triumphant imperial eagle.