What years did the Model 49 Ithaca 22 have no serial numbers?

The Model 49 Ithaca 22 was produced without serial numbers from its introduction in 1963 until approximately 1968. After this period, Ithaca began to include serial numbers on their firearms for better tracking and identification. If you have a Model 49 without a serial number, it is likely from the earlier production years during that timeframe.