That SN would have probably shipped from the factory in very early 1944. There were numerous examples of .38 S&W Special Victory revolvers from WWII which are found unmarked. Most of those were purchased through the Defense Supply Corporation (DSC) for non-military use such as allocation to defense plant security guard use or for civil law enforcement personnel. But there were also other unmarked revolvers made for issue to the OSS or the U. S. Maritime Commission. All wartime Victories that I am aware of did have lanyard swivels on the butt. However, sometimes the swivel has been removed and the hole in the butt for the swivel will be found plugged. A factory letter would be required to establish where yours was first sent.