Watch List notes:

Australia, Elizabeth II, 'Stuart Devlin – Revisiting a Vision', two cents, 2017 (6), head of the Queen r., by Ian Rank Broadley, rev. the numeral 2 on a kangaroo and joey, each in special packaging in tribute to Stuart Devlin (SD p. 283), mint state (6)
The design, from 1966, was never adopted at the time. Mintage: 30,000.