
This lamp is apparently modeled after one of the earliest known forms of Hanukkah lamps. Remnants of a similar Hanukkah lamp were unearthed within the ruins of a medieval synagogue, discovered in an archaeological dig in the town of Lorca, near the city of Murcia in southeastern Spain.
From the Israel Museum publications:
Benjamin, Chaya, North African Lights, Hanukkah Lamps from the Zeyde Schulman Collection in the Israel Museum, The Israel Museum, Jerusalem, 2003, English / Hebrew