Underpaid cover franked 1918 2d bright rose scarlet 'GV Head' issue (SG 63) tied by indistinct VICTORIA cancel with superb strike of large boxed 'INSUFFICIENTLY PREPAID LETTER, Will you kindly return this envelope to your correspondent and advise him that postage on letters to your country is 3d per oz: 2d each additional oz., Postal Dept Commonwealth of Australia' marking on reverse. Addressed to CLEVELAND, USA and taxed on arrival with pair of 1917 2c carmine POSTAGE DUE issue (SG D531) with CLEVELAND precancels attached.