I´m pretty sure, that this is not exact. I know Mecky Messer from the german forum. It is right, that his grandfather was a straight razor producer, but I´m quiet sure, that Mecky dont grind this blades himselfs. My informations are, that he had some blades in Stock and only made handles on them and honed them.
But actually they are sold out or he has only few pieces left.
But I will ask him about the regrind.