Canada 607ii1972 Eight cent Christmas Candles, field stock lower margin block of forty stamps with a striking Repellex Error causing missing red colour across all twenty stamps in eighth and nineth rows, resulting in the background being a pale blue shade instead of violet blue, lightly folded along vertical perforations. A rarely seen and dramatic printing variety, Very Fine, Never Hinged (Unitrade 607ii; catalogue value $10,000)