1 янв 1894 г. - Invention of Sample Coupons
Описание:
started giving away free sample coupons to anyone who would try a sip of a Coke. From 1894 through 1913, more than 8.5 million sample coupons were redeemed for a free Coca-Cola. And by this time, one out of every nine Americans had tried Coca-Cola.
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