In the Israeli city of Acre around 500 CE, Larry the Baker left his mark. A ceramic Byzantine bread stamp has been unearthed bearing the classic Jewish seven branch Menorah and the name "Laurentius" written out in Greek letters.
The name, common to Jews of the Byzantine era, has been found on other bread stamps. The construction of the bread stamp indicates the name was carved after firing. This implies that the stamp may have been made for general use by Jewish bakers, who would then add their name.
The stamp would have been used to label the dough and possibly indicate that it was kosher. [photo]