http://www.brisbanetimes.com.au/new...7446283.html -
This article is primarily concerneed with a proof 1930 penny, and is reproduced in full in another thread. Below are the parts relevant to the proof 1923 halfpenny -
"In for a penny? Then you're in for $2 million
February 22, 2009 - 6:17PM
... a Melbourne-based rare coin dealer ... said the only proof 1923 halfpenny available to collectors had sold earlier this month for a record $500,000, after last being sold a decade ago for $89,100. ..."
Peter in Darwin