1: Lion's leader publicizes dens (5)
2: Boxer Max returned, holding heroin, for treatment (5)
3: Difficult newspaper or novel (4,5)
5: Number One in facetiousness (3)
9: There is no commoner old coin (5)
10: German painter in a southern state (5)
11: Looks like an eyesore, sounds like an eyesore (3)