CNG 108, Lot: 689. Estimate $750. Sold for $1400. This amount does not include the buyer’s fee.

Arcadius. AD 383-408. AV Solidus (21mm, 4.45 g, 12h). Constantinople mint, 7th officina. Struck circa AD 383-385. Rosette-diademed, draped, and cuirassed bust right / Constantinopolis seated facing, head right, with foot on prow, holding scepter and globe; Z//CONOB. RIC IX 46g.2-3; Depeyrot 38/6. Near EF.

Ex Numismatica Ars Classica 64 (17 May 2012), lot 1334 (hammer 2000 CHF); Classical Numismatic Group 69 (8 June 2005), lot 1776.

The mint marks Z and retrograde Z are both recorded for this issue. This particular coin appears to have both, although it is uncertain which is engraved over the other.