The Shanghai tael was a unit of currency used in Shanghai, China, during the late 19th and early 20th centuries. It was equivalent to 1 tael of silver, which was about 37.78 grams. The Shanghai tael was widely used in international trade, and its value fluctuated against other currencies depending on the market. In 1867, the Shanghai tael was worth approximately 3 shillings and 4 pence in British currency.