I am considering selling my Colt Police Positive .22lr. It is has a 4" bbl. & fixed sights. I am told,by other members of this group it is a scarce version made in limited numbers as a police trainer etc. Condition wise,it leaves something to be desired. It has been Parkerized (or something similar) and has pitted areas around the end of the cylinder & forcing cone area.The bore is "dark". However,it is a tack driver with VERY tight lock up. Any idea as to what price I should ask? I have never seen another one like it and don't have a reference point. I added period Colt wood checkered grips. It was made circa 1926.