In the course of archaeological digs near Acre (Israel) in 1970, a bronze seal was found. The most important figure in Jewish society in Girona, Mossé ben Nahman, also known as Nahmanides or Bonastruc ça Porta, used it to sign his letters and documents with. The seal bears the Hebrew inscription: "Moses, son of Rabbi Nahman, from Girona, have courage!".