A single weight airmail cover that the sender has erroneously marked "sea-mail" clearly not understanding the existence of a new "all-up " airmail rate. The 15c rate has been overpaid by 1c with two singles of the 1972 Figure Skating Issue. The cover was sent March 27, 1972, just three weeks after issue.
Est $5.
To gain a better understanding of what I consider in valuing covers, you might find it useful to read the blog post here.
