That's what Luz Quintero and her sister, Angela Malagiere, were wondering about their collection. At her home in Moonachie, New Jersey, Quintero showed some of the coins that could have value ...

Pearlman added that abrasive cleaning can damage coins and significantly lower their value to collectors. “A $1,000 silver dollar can suddenly become a $100 coin if a kitchen scouring pad has ...

"Secret" excavations in Luxembourg reveal 141 Roman gold coins from eight Roman emperors and one usurper. Archaeologists in Luxembourg have discovered a lavish 1,700-year-old hoard of Roman gold ...