Watch List notes:

Australia Penny 1920S No mintmark KM#23 NGC MS62 BN, the 8 jewels on the crown band sharp and clear, also with a die axis rotation of around 15 to 20 degrees, Extremely rare in this high grade, Krause lists at $6500 in MS60, and $12500 in MS63

Estimate: 5000-7500 GBP