Proofhouse.com has Winchester serial numbers.
You cannot find out unless you provide the model number with the serial number.
To find your Winchester model 1897 serial number you need to look on the gun. You also can take it to a local gun dealer who can help find the number.
On the barrel.
Your Winchester model 1894 was made by Winchester in 1974.
By the serial number.
With the serial number that you supplied,your Winchester model 1894 lever action rifle was produced by Winchester in the year 1972.
By posting the serial number in your question.
The G prefix to your serial number shows that it is a model 70 Winchester rifle.It should say this on the barrel of your rifle.
You can find out at proofhouse.com
Winchester Model 97 serial number 764860 was manufactured in the early part of the year 1923.
top of barrel