Portuguese India, Joao IV (1640-1656 AD), Silver 2 Tanga, Obv. Standing Image of Sao Joao (Saint John the Baptist) with halo around his head, looking to right, holding Cross and his Flag also to right, image flanked on either side by his initials "S" and "i" (ioan as Greco - Hebrew origin of John) also date digits 16 and 49 flanked on either side below, Rev. Shield (Escudo) of D. Joao IV for Goa, Flanked by letters G and A (for Goa) with double lined circular border encircled by a petaled border, KM #68, about very fine, very rare.