50 Yuan - Teller Practice Banknote 中国人民银行

Teller training notes issued by the People's Bank of China are produced to full technical specification — same paper stock, same security thread placement, same printing registration as circulating notes — but are overprinted or marked to prevent legal tender use. The 2020 training series was distributed to banking institutions for staff to practice counting, authentication checks, and cash-handling procedures without exposing genuine currency to accelerated wear.

These are not proofs, not specimens, and not propaganda issues. They occupy an odd category that most Western catalogues ignore entirely, which understates their documentary value to anyone studying PBoC production standards.