prusch,
The records that I have indicate that the pistol was a 1911 shipped between November, 1917 and May, 1918. There are a number of the 20xxxx serial numbers that were sold and shipped to individuals during that time, so, without the rest of the numbers I cannot check specifics.
I would not do anything to the pistol, except to preserve its condition with RIG or other suitable grease, until I could delve further into its history. If you want me to check my records, send me an e-mail to dclark@trib.com and I will look further.
dclark