Andronicus III Palaeologus (1328 - 1341 A.D.) 

AE Assarion of Constantinople.

Obv: Cross fleury 
Rev: ANDRONIKOC [...], emperor standing with scepter.

(Sear notes that there is some doubt as to the identification
of this issue; it may have been issued under Andronicus II 
& Michael IX.)

Contributed by Joe Winnett