50 Yuan multicolored background

The Bank of Taiwan functioned as Taiwan's de facto central bank from 1949 until the Central Bank of China resumed operations in 1961 — but even after that transition, the Bank of Taiwan continued issuing its own New Taiwan Dollar notes under a parallel arrangement that persisted well into the 1970s. This 1964 note falls squarely in that overlap period, when two institutions were technically both authorized to put currency into circulation.

The "multicolored background" designation in the catalog distinguishes this from an earlier printing of the same type with a simpler background treatment — a detail that matters for attribution but is easy to overlook without direct comparison.