Auction 333-341 Australian States & Commonwealth of Australia and New Zealand – The ‚KOOYONG‘ Collection - Day 2

1867/71: 20 pa. yellow-green, Stone B, a used horizontal pair (Types III-IV), variety "Imperforate Between Vertically", lightly cancelled by neat datestamp in black leaving the variety clear, one or two blunted perfs. at top right of no significance or importance. See the article by Themis Dacos on this pair (Quarterly Circular Vol XI, No. 3, series 119, Sept 1981; copy with the lot). No other example of this variety is known, unused or used. Unique. Signed Todd AIEP. Cert. Society of Philatelic Americans (1981) Nile Post = unrecorded.