Not sure if anyone will fork-out 1.8M for 3 modern coins.... Aren't PM having problems getting interests on Argyle pink diamond coins? I'm not sure if this one will be a big hit... http://www.9news.com.au/national/2017/06/07/15/50/rare-1-8m-coin-trilogy-unveiled-in-perth
It has been already bought by a premier of Western Australia http://www.goldindustrygroup.com.au/news/2017/6/9/premier-unveils-perth-mints-rare-18m-coin-trilogy