Caligrafia Jujitsu in Chinese / Japanese...

調和流柔術 is the title for Chowa-Ryu Jujitsu.

This roughly translates as harmonious-flow Jujitsu. The first two characters are sometimes romanized as chōwa, chouwa, chowa, or cho-wa.

柔術 has been somewhat incorrectly spelled and pronounced “Jujitsu” for some time in the English-speaking world. The correct Japanese Romaji is Jujutsu or Juujutsu.

A little background on the word: By combining the Kanji pronounced “Ju” (which means flexible, pliable, gentle, yielding) with the Kanji pronounced “Jutsu” (which means art or technique), we get a meaning that can be translated as “flexible technique,” “gentle art” or “yielding technique.”
柔術 does make sense in Chinese as well, although pronounced “rou shu” in China.

The Jujutsu system has a history in Japan that started well before the 1600s. Some see this style as a variation of the “Empty Hand Method” (Karate-do). Even the samurai of old used some Jujutsu methods in defending themselves with their unarmed hands against weapons that could pierce their heavy armor.

There are convoluted relationships between various schools and systems of martial arts, but it's generally accepted that Jujutsu led to the development of Judo and a few other variations.

This is the martial arts title Nihon Jujitsu or Nihon Jujutsu in Japanese Kanji.

The literal meaning is Japan(ese) Jujitsu.