"Boat foreign ” fastens casting of precious metal place because of its, the number that make is quantity comparing copper coin, soft get less much, add society of period of the Republic of China queasy, silver dollar basically is centered in hand of merchant of a few official, because liberate after a large number of changing, remnant of the place that live a life is very few, get lesser than showing measure of money of emission stamp, souvenir much. Can foreknow, silver dollar of “ boat foreign ” is sure to become the force of a labor that collects a bound to need a dark horse of hair.