Calendar for the single year of 1747. The calendar is made from a disc of bronze, which has tarnished and become worn. On one side of the calendar is a table with the months in three letter abbreviations and a table with the numbers for the number of days. Around the edge of the table are inscriptions with term dates. The other side has a table relating to phases of the moon for each month. Around the table are term dates. The calendar is slightly bent and does not sit flat.