First of all, please take a look at the familiar Mitsukoshi mark.
This photo shows Japanese shop curtain, which was hung at several entrances to Nihonbashi Main Store during the 335th Anniversary of Mitsukoshi's founding festival held until early last month.
In the Edo era, it is reminiscent of Surugacho Mitsui Echigoya (In the Mitsui Echigoya era, the three kanji used by the current Mitsui Group are a well-girder in a circle centered on the three kanji used by the current Mitsui Group ... ... ... ...) The feeling is wonderful and I made it unintentionally crisp
.
After that, I knew that "himitsu" is hidden so that the Mitsukoshi mark, which I always see at all times, is auspicious.
It is said that odd numbers have been auspicious since ancient times in Japan, but when writing the Mitsukoshi mark cross character, the two places where the brush is splashed and the brush marks at the last point are "3" "5" and "seven" books.
・・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Please note that this information has not been confirmed by Mr. Mitsukoshi, so if it is different, please be aware.
Rediscovery of the history of Nihonbashi Mitsukoshi Main Store HP: 
http://www.mitsukoshi.co.jp/store/1010/history/
