| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed letter to be used as a direct mail or the like with which information to be provided can be concealed and mailed, wherein the letter can be changed into a three-dimensional form by unsealing it, thereby giving a novel impression to a receiver and thus bringing excellent sales promotion effects as the direct mail or the like and a making operation or structure is not complicated. SOLUTION: A sealed letter body 1 comprises at least connected three sheets 1a, 1b and 1c. One of ends of a standing piece 6 which stands up when the letter body 1 is unsealed is fixed to one of the sheets 1a of the body 1. In addition, the standing piece 6 is enclosed in the sealed letter body 1 while the other end of the standing piece 6 is pinched between the two sheets except the sheet 1a.
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