Australia Reserve Bank 20 Dollars Pick 41a ND (1966-1972) "Commonwealth of Australia" Dollar Issues signatures Coombs & Wilson (5) a consecutive run serial numbers XAR 973862 through XAR 973866. The notes in black on red, yellow and multi-coloured underprint featuring Sir Charles Kingsford-Smith at right on obverse and Lawrence Hargrave at left, aeronautical devices on reverse. Watermarked Captain James Cook. All GEF - about UNC