This is beginning to sound pretty incestuous. Early on SD&G was located and 84 & 86 Chamber Street, NY - I'm going to guess this is the street number on the Manhattan Arms gun if it is marked with any numbers. Every Charles Daly drilling I have ever seen has been made by Sauer. I'd be curious to sit a Daly drilling alongside a Manhattan Arms drilling. I got a feeling they'd be identical except for some letter stamps. So was Manhattan Arms just another SD&G trade name (a la "Charles Daly").
I need access to my references but I'd like to check when Manhattan arms drillings dissappear from the SD&G catalogs and the retailing of Charles Daly drillings begin?
Ken