Eightbore,
Due to the fact that the letter referenced the correct serial number but wrong specifications for my Francotte, it's hard to know if any of it is accurate. I was hoping to get the name of the original owner. I got the following information instead.
Serial Number was listed in VL&D inventory book of March 1, 1924. Letter noted that VL&D New York received it on Nov. 22, 1924 and sold it to VL&A (Von Lengerke & Antoine-Chicago)on the same day. No information on cost or sale price was available.
Never the less, since the problem of documented specifications not matching gun could not be resolved, and no further verification was available I had to disregard all of it.