1978年香港一圆。错版。以较轻坯饼铸打(5.71克)。女王肖像完整,但边缘刻槽较浅,说明坯饼厚度正确但直径过小。5.71 gms. KM-43; Mars-C43. Struck on light weight planchet (5.71 gms.). The queens portrait is fully struck but the edge reeding is weak, suggesting that the planchet was the correct thickness but too small in diameter.PCGS MS-63 Secure Holder.