Catalogue Click for Auction info Stamps, Coins and Postal History (#29MG) Closed Auction Info Lot 25Platinum; 1988 $50 Koala ½oz proof, in wooden case with outer sleeve. No. 05800/12,000. Click image to enlarge PreviousNextSimilar Items Lot closed - Price Realized:$625 (1 bid) Estimate: $750 - $850 Request Condition Report Stamps, Coins and Postal History (#29MG) Closed Auction Info Description Description: Platinum; 1988 $50 Koala ½oz proof, in wooden case with outer sleeve. No. 05800/12,000. Categories: Coins & Banknotes > Coins - Australia > Platinum Terms and conditions Please note: This auction was held by Mossgreen and is shown on the Leski Auctions website for reference only.