1 Jiao non magnetic

China's 1 Jiao coinage underwent a quiet but deliberate material change in the mid-2000s, with non-magnetic copper-nickel issues running alongside — and eventually replacing — the stainless steel variants. The 2005 copper-nickel pieces were struck in comparatively small quantities before the aluminum alloy format took over, making certain years within this short transitional window meaningfully scarcer than mintage records suggest in secondary circulation data.