Pre Model Teen How Do You Find Out If A Winchester Model 94 Is Pre-64?

How do you find out if a Winchester Model 94 is pre-64? - pre model teen

I just an old Winchester Model 94 .30-30. My father gave me what I had my uncle had saved had previously bought and sold, and bought my uncle, somewhere in 1964. I know that the quietly-64-after and best models, so there is no way to know whether your pre-64 or not? Serial number or what?