291 NGC Ch VF Maximian Egypt Alexandria Date Error Tetradrachm Year 7 (21090106C

Description

Choice Very Fine Emperor
Maximian
dated Alexandria Roman Egypt
billon tetradrachm coin.
Minted in the 7th (L Z) Alexandrian year for
Maximian
which corresponds to 291/2 CE.
The date letter, Z, is retrograde, a mint error!  The mint workshop is indicated by Beta (B) below the ex. line.
Certified by NGC to Ch VF, nice brown patina.
6.73g, Emmett 4147/7 (does not reference the date error).
Pedigree: Ex. CNG with their ticket.
Reverse Nike flying right holding wreath and palm.
Nike was the goddess of victory in Greek mythology, depicted as having wings, hence her alternative name “Winged Goddess”.