Andronicus II and Michael IX, AE 20mm Assarion, AD 1295-1320. AE Assarion, Constantinople mint. 

AVTOKRATOREC RWMAIWN, Andronicus, on left and Michael, on 
right, both standing facing, holding labarum between them.

Palaeologan monogram.

Note - the coin formerly shown here was actually a Bulgarian coin.
I have had to use this coin which I found on the very useful 
labarum.info website and hope the site owner does not mind 
me using it, as I was unable to find another example 
anywhere.