Netherlands East Indies 1 Gulden

The Netherlands East Indies 1 Gulden is a silver circulation coin struck for the Dutch East Indies under the Netherlands Indies guilder monetary system, known in Malay as the Roepiah Hindia-Belanda. Following the collapse and eventual dissolution of the United East India Company around 1800, authority over the archipelago transferred directly to the Dutch government. Under state administration, official silver guilders alongside fractional silver and copper pieces were produced for colonial use.

The coin forms part of a monetary lineage that replaced the complex mixture of regional currencies, foreign trade dollars, and Dutch East India Company monies previously active across the islands. Under the company's seventeenth-century administration, accounts had been kept in notional guilders of twenty stuivers, but circulating silver had long been dominated by Spanish eight real coins and imported domestic Dutch denominations. The Dutch government regularised the colonial monetary system by issuing its own silver Netherlands Indies guilders, which circulated until the cessation of Dutch rule and Indonesian independence in 1945.

Manufactured in silver, the 1 Gulden features an obverse carrying either a royal portrait or the royal arms. The reverse bears the stated denomination alongside colonial inscriptions, which are sometimes presented in more than one script. These specific colonial legends and multilingual texts differentiate the coin from contemporary home issues struck for use within the Netherlands. The obverse displays either the royal arms or a royal portrait.