New South Wales Australia Canal Zone Panama 1905-10 Watermark Crown Over A 1916 1/2d Green Used With 2 1/2d Kangaroo Second Watermark and George V 1d Red Vertical Pair on Cover from Goulburn to Canal Zone Panama

New South Wales Australia 1905-10 Watermark Crown Over A 1916 1/2d Green Used With 2 1/2d Kangaroo Second Watermark and George V 1d Red Vertical Pair on Cover from Goulburn to Canal Zone Panama, paying the U.P.U. double rats up to 1oz. Unusual destination and a scarce state/commonwealth combination