Watch List notes:

Australia Threepence 1923 KM#24 Choice and graded MS66 by NGC rare thus. With a mintage figure of just 815,000 this is the second lowest mintage by date (1915 800,000) for George V business strike issues with other dates in the millions. NGC gives a book valuation of US$2,200 in MS63 with no values given for higher grades, this example is the finest recorded by NGC and their population census shows none in MS65 and one in MS64 so by far the finest recorded

Estimate: 400-700 GBP