“M Stanley M” Double Bit Axes

[Slice-and-dice]

Common Michigan pattern double bit axes from the 80s and 90s are the Stanley models with 35/36 inch handles. Steel is hard, generally a nice axe. This model is marked “3 1/2 lbs” and numbered 59-235. The steel is stamped M STANLEY M as shown.

Have we ever solved the mystery of the M’s? Stands for Mann or Mexico, etc? Also, anyone know anything more about the production and specs, type of steel, wood type of handle as purchased, etc?