1 Yuan Pattern, 'Junk dollar', without sun and birds, copper

The Junk dollar pattern series of the early 1930s emerged from Nanking government efforts to unify China's chaotic silver currency under a single national standard — a project that consumed years of negotiation between the Finance Ministry, foreign banking advisors, and the Philadelphia and London mints. The copper striking is a trial piece from that process, produced to test dies before committing to silver production runs.

The absence of the sun-and-birds device distinguishes this from the more familiar issued types, pointing to an early die state before the design was finalized. China abandoned the silver standard entirely in 1935 under the currency reform that nationalized silver, rendering the whole pattern program moot before it ever reached full circulation.