Canada #769-772 1978 Inuit Travel Issue, 4 Canada Post Official Combination FDC's With Different Fluorescent Ink and Paper Varieties

4 Canada Post official combination FDC's for the 1978 Inuit Travel issue, each showing a different ink or fluorescent paper variety on the stamps:

• Normal ink on DF/DF paper and DF envelope
• Normal ink on 769-770, fluorescent ink on 771, DF/DF and LF/LF papers, DF envelope.
• Normal ink on both pairs, DF/DF and LF/LF papers, DF envelope.
• Normal ink on 769-770, fluorescent ink on 771, DF/DF and LF/LF papers, LF envelope.
• Normal ink on 769-770, fluorescent ink on 771, DF/DF and LF/LF papers, DF-fl envelope.

Unitrade for the mint pairs is $14.65. As there are no FDC prices for paper and ink varieties, so we have used the mint stamp prices as a proxy.