The 1920 Shilling was the final example of the George V Shilling to feature an 'M' for Melbourne mint-mark. The total mintage for the year was 1,642,000 - which is a quite typical mintage for the series but is substantially lower than the high mintage's of the previous three years. This lower mintage makes the type quite scarce with PCGS population reports showing only 38 graded examples of which less than fifteen are mint-state examples. (PCGS, 2017) The year typically achieves prices double the 1918-M and much more than the 1917-M.
Between 1916 and 1920 the Melbourne Mint struck shillings bearing the mint-mark 'M' under the date. The mint-marks were discontinued after 1920 when the Commonwealth Government decided that they wanted the dies to be interchangeable between mints in Australia.