Canada Revenues Van Dam #OTG3. Mint NH upper sheet margin strip of three of the 3c on 50c 1928 issue Ontario Provincial GASOLINE TAX Stamp with full "FIFTY CENTS" imprint in margin. Straight edge at right. No Blue C's on gum side (scarce thus). A nice Provincial revenue showpiece! Valued as three NH stamps but worth more. 2017 Van Dam.