Lot 83Commonwealth Postal History - 1978 cover sent to Mildura with single franking 18c Flower tied €˜IRYMPLE/17JY78/VIC-3498€™ cds under-paying 20c domestic letter rate, taxed locally with oval undenominated "T 4c" cachet in black on face charging double 2c deficiency, on arrival Marine Life 4c Mauve Stinger affixed tied €˜MILDURA/18JY78/ VIC-3500€™ cds to pay postage due, couple of minor blemishes. [The domestic letter rate was increased from 18c to 20c on 1 July 1978]