Hi, the mintage number for this coin as reported by Numista seems low, and conflicts with Krause 46 ed. (2019). The frequency percentage in Numista also seems to support a Numista mintage misprint.
https://en.numista.com/catalogue/pieces304.html
Numista: 1976 R 16 000 000
Krause: 1976 R 160,000,000
