ONE POUND, Coombs/Wilson (1961), specimen note, HF/65 456024, SPECIMEN in red diagonally on front and back (R.34aFs). Uncirculated and very rare.
Ex Downie's Sale, August 1986 (part of a set of 4) and Caldwell Collection, Noble Numismatics Sale 118B (lot 4401).
See also lots 4370 and 4372.
This note illustrated on p90 of 'Australian Specimen Notes' third edition, by Michael P.Vort-Ronald.