DIOCLETIAN, Follis, GENIO POPVLI ROMANI, Genius stg l, A- G /TR, RIC 170a, EF, centered, obv sharply struck with superb portrait detail; rev with minor crudeness; silvered surfaces with toning a little uneven. (A VF, same RIC 170a, brought $322 + buyer fee, Vico 9/17. Why? Life is full of mysteries.)