The Israel Antiquities Authority has uncovered one of the world's oldest synagogues in an excavation at Migdal, near the Sea of Galilee (Kinneret). Inside the synagogue, a stone relief contains a depiction of the seven branched Menorah which stood in the Temple, and which was most likely seen by the artist who sculpted the stone relief.
http://www.archaeologydaily.com/news/200909112145/First-Temple-Menorah-Relief-by-Jewish-Eyewitness-found.html