Canada #1310, 1333a 40c-50c Multicoloured, 1991 Masterpices of Canadian Art - Dangerous Occupations Issues, 2 VF Official Canada Post FDC's Fluorescent & HB White Envelopes, Franked With UR Inscription Blocks

2 VF official Canada post fdc's of the 40c-50c multicoloured Forest, British Columbia - Search & Rescue from the 1991 Masterpices of Canadian Art - Dangerous Occupations Issues fluorescent & HB white envelopes, franked with UR inscription blocks. These envelopes appears to be the standard ones for the issues. The fluorescence of the envelopes is an important characteristic that has been ignored by all the catalogues. Why does it matter? Because the envelope is an integral component of the FDC in the same way that a cover would be to a complete booklet, or the cardboard insert would be to a pack of plate blocks. The expectation, and general observation would be that Canada Post would utilize one type of envelope for a particular issue, so that if a different one from the standard type is found, then there is a good chance that it will be scarce, and is therefore, in our opinion collectible.

Chung values this at $7.2.