Leo VI with Alexander, 886-912 AD. AE Follis. Constantinople.

Obv: LEON S ALEXANGROS, Leo on left and Alexander on right, both 
crowned and wearing loros, seated facing on double throne, holding 
labarum between them.
Rev: +LEON S ALEXAN GROS bASIL ROMEON legend in four lines.

SB 1730, DOC 6

Image courtesy of Hess-Divo auctions, Feb 2011.
Price realized: 240 Swiss Francs.