Canada #689-691i 10c & 20c Multicoloured 1976 Innsbruck Winter Olympics – US Bicentennial, A Specialized Group of VFNH Singles on Different Papers, With Different Background Shades

A specialized group of VFNH singles printed on different papers, or showing different background shades as follows:
• 689 (Innsbruck Winter Olympics) on DF/DF paper showing two slightly different shades of grey background.
• 690 (Habitat Conference) on NF/LF paper, with both cream and bright white surface colour and both showing slightly different background shades.
• 691 and 691i (US Bicentennial) on LF/F, LF/LF and LF/DF papers.
Unitrade values these singles at $7.90, taking the price of the closest listed varieties for those that it does not list. The stamps offered here grade between 75 and 80 as follows:
Centering/Margins: 45/70 and 50/70

Paper Freshness: 5/5

Colour: 5/5

Impression: 5/5

Absence of Visible Paper Flaws: 5/5

Perforations: 10/10