The term 'OLD COIN OF GREECE' refers to two coins, the DRACHMA and the obol. The DRACHMA was a silver coin used in Ancient Greece and was the primary currency of the region for centuries. It was first introduced in the 6th century BC and continued to be used until the early 20th century. The obol was a smaller denomination of the DRACHMA and was made of copper or bronze. It was used as a form of payment for goods and services in Ancient Greece and was also used as a form of currency in some parts of the Roman Empire.