Choice Extremely Fine Roman Egypt Alexandria billon silver tetradrachm coin.
Minted in the 5th Alexandrian year of Valerian I = 273/4 CE, 9.2g.
Commemorative type issued to celebrate the Emperor's 5th year of reign.
Certified by NGC to Ch XF, nice brown patina.
Pedigree: Ex CNG (part of lot 1049 of CNG Sale XXIX, 3/30/94, with ticket).