"Double-headed" Roman facing portrait coins

MadWriter

I've been wandering through the Web looking for this without much look...

Could anyone tell me which Roman coins have portraits of two people facing one another on the obverse, besides the ones issued by Nero (with Agrippina) and Commodus (with Verus)? Thanks--

Danny

JZrarities

Look here: Wild Winds

STLNATS

In terms of Roman provincal coins, there is a series from Marcianopolis which features facing busts. Interesting 3rd century series and generally not real expensive as I recall.....