C.I. Hood and Co. (Apothecaries) (3093747676)
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's a novelty item. The shape and the artwork make it a collectible, ensuring the ad message ("100 Doses One Dollar") stays in the household.
Steal this when
You want to deliver a very short sales message via a highly retainable novelty format.