Watch List notes:

L. Roscius Fabatus, Denarius serratus, Rome, 64 BC; AR (g 3,88; mm 19; h 6); Head of Juno Sospita r.; behind, control symbol; below, L ROSCI, Rv. Girl standing r., feeding serpent to r.; on l., control symbol; in ex. FABATI. Crawford 412/1 (s. ?); Roscia 3; Sydenham 915.
Apparently unlisted symbol. Cabinet tone, large flan, about extremely fine.