存世有两种来路不明的银币:“富”字及鹿头银币,人们对其来源众说纷纭。“富”字银币,正面只有一汉字篆书“富”字(故称“富”字银币),背面为老挝文(也有人认为是缅甸文)、中文标示面值。面值有“半两正银”、“一两正银”两种(图1、2)。鹿头银币,正面中央为一只长角的雄鹿 There are two unknown silver coins in the world: “rich” and deer head silver, people have different opinions about its origin. “Fu ” character silver coin, the front is only a Chinese character seal “rich ” character (so called “rich ”), the back of the Lao language (some people think it is Burmese), Chinese marked face value. Nominal “half two silver ”, “one or two positive silver ” two (Figure 1, 2). Deer head silver coin, the central front of a stag bucks