Well, they are definitely the same characters, but the fact that they are in blue is odd. I would contact Mr. Nilsson and ask him. His email is: firstname.lastname@example.org
In China, if it is the wrong color, it can mean it is a fake, or it can mean that it comes from a very specific time period. Like I said, I do not pretend to be knowledgeable about Japanese antiques, so I do not know.