Serial number check
Buy the serial number.If your Winchester model 70 rifle has a serial number lower than 581,470,then it was made prior to the manufacturing changes in 1964.
pre '64 is based on serial numbers under 579600
10-1000 USD + depending on specifics.
The last pre-1964 Model 94 serial number was 2,586,000. The newer rifles with stamped parts started with serial number 2,700,000.
The easiest method is by the serial number... if it is less than 2,700,000 it is a pre-1964.
By the serial number.
Production of the Model 63 ended in 1959.
The last model 70 in 1963 was #581471. 1964 started with #700000.
Unless it was a special order, you won't be able to.
Your rifle was built in 1964 but is considered a "pre-64" as the new serial number series with the post 64 actions started at 2,700,000. Value can not be determined without pictures. Send some to me at gohuntn@telus.net and I would be glad to tell you what the rifle is worth.
the model number and serial number will give you the information,then ask your question here and you should be able to determine if your Winchester is a pre-64.
Here is a site that has what you want, at least for he pre 1964 models: http://www.gunsworld.com/exploded/win94pre.htm