Esemplari della tipologia

British Museum, 1841,B.3643
28 mm • 16.21 g • ↑↑ 11h
British Museum, 1844,0425.272
29 mm • 14.47 g • ↑↑ 5h
British Museum, G.2905
28 mm • 14.7 g • ↑↑ 5h