缅因硬币Maine penny)是一个在美国缅因州发现的古代挪威银币,估计在11世纪奥拉夫三世在位(即1067年–1093年)时铸造。这枚硬币的出现,可能说明以下其中一个可能:

缅因硬币

外部链接

44°14′06″N 68°32′38″W

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