DP, first of all welcome to the forum. I can tell you it is a .32 Regulation Police (Pre-War) built between 1917-1942. It has a six inch barrel which was the least popular of the three options. Your serial number is about in the middle of the range. The grips are pure 1920's decade. And, I suspect are numbered to the gun. My gut says their heyday was about exhuasted in the early 20's.
P.S. The .32 Hand Ejectors both 1903 and the Regulation Police are not generally high dollar items. It is not that unusual to see them in great condition. I suppose a great number have spent four generations in ladies underwear drawers. I bought a similar piece with a 3.25 inch barrel through an on-line auction for $325.00 in the current year. My suggestion is to log on to Gunbroker.com and follow .32 Hand Ejectors for a few weeks. Pay attention to what is attracting bids and selling. Not what is cluttering the screen. If you are a handy navigator you can pull up 90 days of sales history out of their detailed search mechanism.