There is supposed to be a photograph of Yoshinobu from his early childhood, but because cameras were probably not yet introduced to Japan at that time, it is doubtful that the photograph is that of Yoshinobu.
慶喜には幼少の頃の写真と言われるものがあるが、慶喜の幼少の時期、日本に写真機はまだなかったと考えられるため、慶喜本人のものであるかどうかは疑わしい。