Martha Cooper, © National Geographic Society

Signs from ancient Sepphoris, centuries before Jesus. A bronze bull, bowl and miniature incense burner (only l inch high) probably date to the Bronze Age (3150-1200 B.C.) or Iron Age (1200–586 B.C.). Found in the cistern of a first-century A.D. Jewish house, into which they had been thrown atop some fourth-century debris, these rare objects constitute a ‘‘fascinating enigma,” according to excavation director James F. Strange, and hint at secrets yet to be learned at Sepphoris.