Andy16
Croesus mining NL became Sirius Resources NL 17th September 2009
Sirius consolidation (reconstruction of Capital) took place 30th December 2010 @ 20 CRS = 1 SIR
CRS shares were delisted when SIR shares were sent out they were issuer sponsored. Meaning shares held by your broker were re-issued to you as holder (not your broker as holder)
Hope this may help you
