Thanks for the info. Sorry I didn't get back to this forum sooner but I was out of town for a few days and I guess I assumed that I would get an email message letting me know that responses had been posted like you get in some forums.
My gun has the serial number on the butt, not the front strap of the grip so it appears that it may be a hand ejector. I assumed that it was a Regulation Police revolver because someone on another forum told me it was. Hopefully, someone can confirm this from the picture I am attaching.
The serial numbers are also marked on the rear of the cylinder and the back of the star wheel ejector. Also, the patent date is stamped on the bottom of the grips and it appears to read, "Pat June 5 1917" but the numbers are very worn. I am especially uncertain about the last digit (7).
The picture attached here was taken the day I got the gun. It has since been cleaned up but it still has wear on the finish. However, the action is tight as can be and everything is smoot as silk in operation. The cylinder is tighter than most brand new revolvers and it locks up beautifully.