The three-month promotion for Nestlé's Carlos V© brand was carried on 53 million chocolate bars and centred on helping the brand's famous 'King Carlos V' character find his 'lost' crown.
Each bar featured a special 3mm tape which provided consumers with a unique code, printed in a high-contrast black text on a yellow background design. The tapes were applied to the inside of the wrapper, to be viewed after opening, combining a sense of anticipation and excitement
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