Prt-464.
Photo from Album (2012), sale 14, lot 1356. AR rupia, 1750, KM-24, cleaned, crude Fine to Very Fine.

Wt = 11.76g. Diam = ~21.5mm. Rupia, 1750. D. Joao V (1706-1750) Ref.: Gomes 80.07
Photo from Zeno posted by Lingen