Obv. DATPRETIVM:SERVATA:SALVS· / POTIORQ3:METALLO EST:
Rev. MONET:NOV:ARG:REG:POLO:1664; the small shield without crown; small squares at POL.
Silver, 6.36 g, 30.5 mm. Szłapinski &
Biełopolski do not record the obverse legend with POLO in this year and mint. Grade
II-. Unusually clearly struck, minor flan flaws. Unrecorded
variant.