Canada #1163 37c Multicoloured Parliament Buildings, 1987-1991 Mammal & Architecture Issue, A VF First Day Cover Fluorescent Cream Envelope

A VF first day cover of the 37c multicoloured Parliament Buildings from the 1987-1991 Mammal & Architecture Issue. Fluorescent cream envelope, . The envelope is an unusual variety for this issue. The initial releases of this issue utilized cream coloured envelopes which were either DF or LF under UV. Later releases in 1989 and 1990 utilized white envelopes, which were generally HF or HB under UV light. This one is much brighter than LF, but not quite bright enough to be MF. 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.

Unitrade does not list any variations of the FDC's. Therefore, our estimate of the value is $5.