Omer counting booklet. Marcus Donath (Mordechai Sofer) made the booklet in Nitra, Slovakia, in 1834. Its specialty is that every day is marked with other types of decorative letters.

Omer counting booklet. Tradition holds that under Roman rule, there was a plague that killed many of Rabbi Akiva’s students. As a commemoration of this tragedy, the counting of the Omer is also a time of semi-mourning, during which Jewish law forbids music, dance, weddings, haircuts. An exception from this is the 33rd day of the Omer, called “Lag ba-Omer”, when all this is permitted.