The thing is no OSS pistols are listed as being such as no one has found a list of serial numbers used by OSS or one that I have ever heard of. If it can be proven to be one assigned to OSS then it would increase the collector interest in it and I am sure the value would go way up but like the General pistols there has to be proof. If it's a government purchased pistol then being blued it would have a serial number no lower then 554,447 or higher then approximately 562,000.