Australia 1920 Penny Dot Above Top Scroll PCGS VF30
On the basis of Paul Holland’s recent research, the hypothesis of the “dot above top scroll” variety is that the engraver mistakenly marked the wrong end of the coin. A dot under scroll would mark this as a Melbourne Mint coin. The small eddies under the reverse legend letters have been identified as a metal flow issue. That fishtailing was particular to the reverse legends on Melbourne Mint coins.
http://www.numismatics.org.au/pdfjournal/Vol28/naa-journal-vol-28-holland.pdf
Melbourne Mint did a crash course in penny production in 1919 and it shows up in the coins. This is another important variant in the range of 1919/1920 pennies, perhaps limited to 1 or 2 working dies.
You can verify the certificate on this coin by clicking on the following link:
