 Smaller objects include a wheel @-@ turned blackware ceramic , a few terracotta figurines , shell beads , gems , gold , terracotta , iron nails , copper percussion beater , red fragment of a Roman lamp shade , an engraved emblem of emperor Augustus , an ivory handle , and a wooden toy boat . Based on these antiquities Wheeler concluded that the Arikamedu was a Greek ( Yavana ) trading station . However , recent excavations by Begley have altered this assessment . 
