B.T. Babbitt's 1776 trade mark / B.T. Babbitt.
The pattern
This still is filed under Keepable trade card.
Define
A small card people keep (pretty, useful, or collectible) that carries the brand after the encounter.
Mechanism
Retention object. The gift is the media. Recall is paid for by usefulness or delight, not by repetition.
Verdict
We can put a physical or digital keepable in someone's pocket and they will not throw it away.
Why it works
It pairs a charming, unrelated pastoral image (which people liked to collect) with high-sounding, pseudo-scientific copy on the reverse.
Steal this when
You are using collectible or aesthetically pleasing premiums to carry your commercial message.