I see a photo in Wait's that shows your handle style as 1928. The info is sketchy but that would be my guess. I am sure someone knows more about this than me.Wow, my memory is terrible... it's green velvet inside, not purple. Attached is a photo of the box and a photo of the 1912 razor. The "M" is asymmetrical, same as yours. Are you thinking post-1924 for both the box and the razor?