[Calendar] Jewish-Christian conversion table, 19th-century
Dutch and Hebrew. Ink on cardboard. 35 x 43 cm. No date, but the inaugurational ceremony of the Municipal University of Amsterdam in 1877 is mentioned. The document includes a conversion table for different calendars as well as a mathematical instruction for calculating important numerical values for both Judaism and Christianity. With a rotatating part for the days.
Minor foxing, tear to lower margin, folding mark in lower right corner.