IMJ424042 Calendar for counting the omer, c.1794 (ink on parchment) by Dutch School, (18th century); 11x8 cm; The Israel Museum, Jerusalem, Israel; (add.info.: Hebrew inscription notes that the owner was the eminent Rabbi Avraham Kaiser Neri; a later inscription states that Kaiser gave the calendar as a gift to Ber son of Rabbi Moshe Melitz of Prague in honour of his Bar Mitzvah; Amsterdamn, Netherlands; Counting of the Omer also called Sefirat Ha\'omer, The Day of Waving, or Waving the \'Omer;); 穢 Israel Museum, Jerusalem ; Purchase, Schatz Foundation; Dutch, out of copyright.