I have acquired a Marlin 22 Mag "Lever Matic" and as far as I can tell it has no serial number or if it does I can't find it. I am understanding that before 1968 the manufacturer did not have to have serial numbers. If I am correct can some one tell me or give me an educated guess as to the age and value of this rifle? It is a shooter with some bluing worn off the barrel and some dings on the stock but for it's age I don't think in too bad of shape. Thanks in advance for any and all opinions. (Sorry for the sideways picture as I'm not too good with computers.)