Shearith Israel was the first Jewish congregation established in North America, and the only Jewish congregation in New York City from 1654 until 1825. Between 1654 and 1730, it met in rented quarters, consecrating its first building in 1730 on Mill Street. This omer board is believed to date from this period of Shearith Israel’s history. It is used to keep count in the ritual of counting the forty-nine days from the first day on which the omer (a unit of measurement) of barley was offered in the Temple in Jerusalem (now the first night of Passover) until the day before the holiday of Shavuot, when an offering of wheat was made.