CC-144-BK Leonardo cello case 4/4 CC-144-BU Leonardo cello case 4/4 CC-244-BK Leonardo cello case 4/4 CC-244-BU Leonardo cello case 4/4 CC-644-BU Leonardo Student series cello case 4/4 CC-644-SL Leonardo Student series cello case 4/4 CC-644-BK Leonardo Student series cello case 4/4 OCO Hiscox cello case OCW Hiscox cello case