The entire run, 10 million tons of conversation hearts, will sell out in just six weeks.
The hearts are made almost entirely of sugar, which means they have quite a long shelf life--around five years, Marshall estimates.
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While the slogans for next year's hearts have already been chosen and production on them will begin next week, he is sworn to secrecy.
"I could tell you the balance of my bank account before I could tell you the new slogans," the King of Hearts says.