Canada Stamps - Keep Fit (1974) - Collection of 4 Blocks (632a, 632ai, 647a, 647ai)
A nice example collection of an extreme fluorescence difference! It contains four se-tenant blocks from the 1974 Keep Fit issue in their different fluorescence. The blue summer blocks were issued on a dull fluorescent paper (#632A), but also in a bit scarcer hibrite version. Therefore, the contrast between the DF and the HB copies is staggering! The red winter blocks were issued on a dull fluorescent to low fluorescent paper, but they were also issued on a much, much scarcer hibrite paper, almost ten times more valuable than the regular version! Therefore, this set contains:
- #632a: Summer block on DF paper
- #632ai: Summer block on HB paper
- #647a: Winter block on DF-LF paper
- #647ai: Winter block on HB paper
Add them to your collection today at a rock-bottom price!