This paper craft is an Origami Sycee, designed by Ronald Koh. A sycee was a type of silver or gold ingot currency used in China until the 20th century. The name derives from the Cantonese words meaning "fine silk".
In North China, the word yuanbao, was used for similar ingots. This word is attested in the 19th-century English-language literature on Xinjiang and the trade between Xinjiang and British India as yamboo or yambu. For more information please click here.
You can download this diagram here: Origami Sycee Free Diagram Download