In many German Hebrew presses, Jewish workers would print small works (i.e. calendars, Blessings, etc.) without reporting them to the Christian nobleman that owned the press. The exorbitant rents and taxes demanded of the Jews made economic survival impossible. To put food on the table works like this lot were printed and sold clandestinely. Many times they would forge the name of press and printer to cover the deed.

The printers of this calendar are unknown. The term "Inheritors of Wolf Levi" appears in several calendars over a long span of time and in all liklihood was used as an hidden indicator of the real printer's identity. CD-EPI 0323816 records a single calendar for the year 5549 (1788) by the same printer.