177318 - Australia - General - Australia 1908 20/- Postage Due with stroke, the rarest of Australian Postage Dues, Cat SG D62, Cat BW D75, superb mint example, this stamp was offered in an Australian Auction last year with an equivalent estimate of $10,000NZ plus their Tax, a highlight to any Australian collection, see scan - sold by Postal Bid Sale on 16.3.2011