Canada #1371 84c Stanley Plum, Single Usage on Two Postcards, Both Returned to Sender

Two postcards, one to the UK and the other to France, both sent in 1992, and each franked with a single of the 84c Stanley Plum, paying the 84c airmail rate. Each has been returned to sender as undeliverable because of incomplete address, with the UK one including boxed black handstamps “Incomplete Address” and “No Postcode or District Number”. Very fine. Est. $20.