The coin weighs 4.32 g and its diameter is 19.53 mm. Another rare coin to be auctioned is the rare silver one rupee of Mughal King Dawar Bakhsh, who ruled for just 72 days. The coin is estimated ...

Last year was a lucrative one for sellers of rare coins, as one auction house sold five specimens for more than $1 million each — including one that fetched a record price in its category.

Overstamps are rare to begin with, but this one stands out because it involves two separate years. High-grade specimens have sold for more than $15,000. This Type 4 silver coin was minted in ...