I have a python that was given to me by my dad about 10 years ago and I dont know much about it. I would like to know what year it is and maybe how much it is worth. Thank you for any help you can give me. It is a 6 inch with a blue finish. Serial #V120xx it has colt grips that appear to be walnut with a cut out on the side for thunb or speed loader I also have the packmire grips.