You cannot add "Cape of Good Hope: The Fourpence Black Triangular Stamp" to the basket because the product is out of stock.
Melville, Fred J.
Aero-Stamp Collecting
Publisher: The Philatelic Institute, London, 1923
First edition, paperback, illustrated, 56 pages + publisher’s advertisements, slight dusty marks, small piece missing from foot of spine, in Good condition.