3000 Réis - José I Countermark MR over '1 Ducat, Holland, 1752'

Portugal's colonial administration in Mozambique faced a persistent shortage of gold coinage suitable for local commerce during the mid-eighteenth century. Rather than wait for freshly minted colonial issues from Lisbon, the administration authorized countermarking circulating foreign gold — in this case, Dutch ducats from the Holland mint — with the crowned "MR" punch, standing for *Moeda Real*, to validate them for official circulation at a fixed tariffed value.

The 1752 Holland ducat was a well-traveled trade coin by the time it received this mark in 1765. Dutch ducats circulated extensively across Indian Ocean trade networks.