Hello Chris,
Cannot help you on the "0.11451" number stamp...but from the serial number you reported, your 1906 DWM-Swiss luger is in the first 2000 pistols made of that model and was made around 1907. It should have the Swiss Cross/Shield on the chamber...
Can you post photos of your luger and the stampings you are questioning...?
On Germany Navy lugers (not Swiss guns) one may see an "O-number" stamp, but usually on the grip strap denoting a German Navy property number...
I will let others respond with their ideas about your "0.1141" stamping...
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />