10 Leva Zlato

Bulgaria's first banknote series, of which this is part, was authorized under the 1885 Law on the Bulgarian National Bank — itself drafted just seven years after the country regained autonomy from the Ottoman Empire. The BNB turned to Bradbury Wilkinson almost by default; the London firm was already printing for several newly formed Balkan states scrambling to establish credible paper currency infrastructure in the 1880s.

The "Zlato" designation — meaning gold — indicates the note was nominally backed by gold leva under the Bulgarian gold standard, which the country adopted in line with the Latin Monetary Union framework. Whether that backing held in practice during Bulgaria's volatile early fiscal years is another matter.

P#A5 is among the rarest survivors of the first emission; most circulated heavily in a largely agrarian economy unaccustomed to paper instruments.