Two single weight airmail covers to Denmark and the United Kingdom, sent July 9, 1971 and September 29, 1971 respectively. Franked with a single of the 15c 1971 Radio Canada International Issue.
Est $30 based on $15 per cover, as listed in Unitrade.
To gain a better understanding of what I consider in valuing covers, you might find it useful to read the blog post here.
