Probably because technically they were unable to center the "MAR" as it would overrun the small second axis... ? Anyway I agree the "MONTH" is useless and should be removed, unless they left it for overall balance of the dial ?
And it is so much more striking in person. Especially, the guilloché dial which is beautifully executed. The applied batons, the minutes chapter and the knurled bezel. Gorgeous watch. All the positive aspects of the watch made me forget the word "month".....