Canada #625-628 6c-15c Multicolored 1973 Christmas Issue, 4 First Day Covers Featuring Singles, Pairs and Plate Blocks.
4 VF Official Canada Post first day covers of the 1973 Christmas Issue. The covers include a mixture of plate blocks, pairs, a plate block and a combination FDC. The envelopes are all NF. The covers were canceled in Ottawa. The covers feature a cachet of a stylized snowman on the left side.
Unitrade values this combination of covers at $9.45 treating singles as the basic covers and the multiples as mint plate blocks. That is generally the correct way to price unaddressed FDC's, as they are essentially pre-cancelled mint items that are still valid for postage.