Perhaps it was a friend who went to China, and brought these coins back as a souvenir gift.
Fortunately you can rely on Conan Doyle and writers in general being parsimonious: unlike reality, stories don’t contain odd details unless they’re important to the plot.
Fortunately you can rely on Conan Doyle and writers in general being parsimonious: unlike reality, stories don’t contain odd details unless they’re important to the plot.