Indonesia's 50th independence anniversary in 1995 prompted an unusually ambitious commemorative program from Bank Indonesia, of which this gold issue was the flagship piece. The .958 fineness — sometimes called "23 karat" — is a deliberate echo of traditional Indonesian goldsmithing standards rather than the .900 or .999 specifications more common in modern sovereign issues.
Indonesia's 50th independence anniversary in 1995 prompted an unusually ambitious commemorative program from Bank Indonesia, of which this gold issue was the flagship piece. The .958 fineness — sometimes called "23 karat" — is a deliberate echo of traditional Indonesian goldsmithing standards rather than the .900 or .999 specifications more common in modern sovereign issues.