Australia-The 1928 and 1932 George the 5th 1 Shilling and Fourpence Definitive-Illustrated

Illustrated below are two varieties of the 1 Shilling and 4 Pence (turquoise) George the 5th definitive. The stamp on the left is the 1928 issue, the right the 1932 issue. There are no known differences in design or colour and can only be identified by the watermark, (shown below the illustration of the stamp faces). The 1928 version was watermarked with a large "A" under a crown, the 1932 issue had "C of A" under a crown. The earlier issue is the more highly valued.