I Cryptic 1002
Please help with last 3.
23 across.Clue is:Examples of circulation:gold coins.I have E?B???
19 down.Clue is:Lively work redducing vermin around lake.I have R???L???
30 across.Clue is:Woman holding large mass,one from a Scottish wall.I have A?T?N???.Is it Antonina? If so, how does it fit with Scottish wall?
Many thanks.