I personally think it doesn't matter because the watch overall looks great. If it was redone by the Italian craftsman referred to here, it is as good a restoration as you are going to get.
If I were to cast "some doubt" I would have pointed out that it wasn't a reverse graduated bezel (50 down to 10 instead of 10 to 50 like this one). I believe most of the -1 to -3 versions of the 2913 came with the reverse graduated bezel though would not be able to tell for sure if this was the only type of bezel these early 2913s left the factory with.