Pattern coins from Bank Indonesia's 1970 series were produced as proposed designs submitted for evaluation before official adoption — most were struck in very small numbers at foreign mints, with several denominations trial-struck in multiple metals simultaneously to test appearance and durability. The nickel version of this rupiah pattern was almost certainly never intended for mass circulation, given Indonesia's move toward aluminum for low-denomination coinage in this period due to cost constraints.
Pattern coins from Bank Indonesia's 1970 series were produced as proposed designs submitted for evaluation before official adoption — most were struck in very small numbers at foreign mints, with several denominations trial-struck in multiple metals simultaneously to test appearance and durability. The nickel version of this rupiah pattern was almost certainly never intended for mass circulation, given Indonesia's move toward aluminum for low-denomination coinage in this period due to cost constraints.