Define
One line that can be replayed across executions so the campaign is a family, not a one-off.
Mechanism
Repeatable frame. Each ad is a verse. The line is the chorus. Recognition compounds because the structure is stable.
Verdict
We will run more than one execution and need them to add up in memory.
Don't
We have one shot. A series mechanism with a single ad is just a headline.
Rights-cleared examples
'Greetings from the Sky' Promotional Slip for the Vin Fiz Flyer, September 27, 1911
Ad for Liebig 'Company's' Extract of Beef from The Sketch December 12, 1894
Beautiful Hair - Breck" Breck Girl ad, Photoplay January 1955
Booth's broiled sardines tin label
Breck Girl ad featuring Kim Basinger (art by Ralph William Williams)
Breck Girl ad with Kim Basinger and her mother (art by Ralph William Williams)
Concerning Three Presidents
De Stijl advertisement page: Talens
Eventually - Why Not Now?" - Gold Medal Flour (Saturday Evening Post, May 25 1918)
Franz Grainer Werbemarke 1911
Gift of the Golden Summer" Campbell's Condensed Tomato Soup ad, Ladies' Home Journal 1948
Green Giant Mexicorn ad, Ladies' Home Journal January 1953